(455, '', 'J', 'Biskup, N;Garcia-Hernandez, M;Alvarez-Serrano, I;Lopez, ML;Veiga, ML;', 'Biskup, N.; Garcia-Hernandez, M.; Alvarez-Serrano, I.; Lopez, M. L.; Veiga, M. L.', '', '', '', '', 'Room temperature electroresistance in Sr2-xGdxMnTiO6 perovskites (0 <= x <= 1)', 'JOURNAL OF ALLOYS AND COMPOUNDS', '', '', 'English', 'Article', '', '', '', '', '', 'Manganites; Electroresistance; Magnetic; Gadolinium', 'We report on the room temperature strong (similar to 80%) electroresistance (ER) in the double perovskite with mixed Mn valence: Sr2-xGdxMnTiO6, 0 <= x <= 1. Both, continuous and pulsed current-voltage curves are almost identical which indicates that the observed electroresistance is not associated with heating. This is also supported by simultaneous temperature measurements. ER is negligible (absent) in the x = 0 compound and increases with the increase of Gd content ''x''. The amplitude of ER has a maximum for x = 0.75, suggesting that ER is determined by both the double exchange and the Mn3+ concentration. At the same time, magnetic interactions change from the antiferromagnetic (x = 0) to ferromagnetic ones as x -> 1, thus linking the ER with ferromagnetism. (C) 2011 Elsevier B. V. All rights reserved.', '[Alvarez-Serrano, I.; Lopez, M. L.; Veiga, M. L.] Univ Complutense Madrid, Fac Ciencias Quim, Dept Quim Inorgan, E-28040 Madrid, Spain; [Biskup, N.; G', 'Alvarez-Serrano, I (reprint author), Univ Complutense Madrid, Fac Ciencias Quim, Dept Quim Inorgan, Ciudad Univ S-N, E-28040 Madrid, Spain.', 'ias@quim.ucm.es', 'Spanish Ministerio de Ciencia e Innovacion [MAT2003-01880, MAT2010-20117, MAT-2005-06024-C02-01, MAT-2008-06517-C02-01, CSD2009-00013]; Comunidad de M', 'We acknowledge financial support from Spanish Ministerio de Ciencia e Innovacion - MAT2003-01880, MAT2010-20117, MAT-2005-06024-C02-01, MAT-2008-06517', 'Alvarez-Serrano I, 2011, J AM CERAM SOC, V94, P270, DOI 10.1111/j.1551-2916.2010.04054.x; Alvarez-Serrano I, 2010, J AM CERAM SOC, V93, P2311, DOI 10.', '20', 5, 5, 'ELSEVIER SCIENCE SA', 'LAUSANNE', 'PO BOX 564, 1001 LAUSANNE, SWITZERLAND', '0925-8388', '', 'J ALLOY CO', 'J. Alloy. ', 'APR 14', '2011', '509', '15', '', '', '', '4917', '4923', '', '10.1016/j.jallcom.2011.01.130', '', '7', '', 'Chemi', 'Chemi', '748DM', 'WOS:0', 0, 0),
(456, '', 'J', 'Bruno, FY;Garcia-Barriocanal, J;Varela, M;Nemes, NM;Thakur, P;Cezar, JC;Brookes, NB;Rivera-Calzada, A;Garcia-Hernandez, M;Leon, C;Okamoto, S;Pennycook, SJ;Santamaria, J;', 'Bruno, F. Y.; Garcia-Barriocanal, J.; Varela, M.; Nemes, N. M.; Thakur, P.; Cezar, J. C.; Brookes, N. B.; Rivera-Calzada, A.; Garcia-Hernandez, M.; Leon, C.; Okamoto, S.; Pennycook, S. J.; Santamaria, J.', '', '', '', '', 'Electronic and Magnetic Reconstructions in La0.7Sr0.3MnO3/SrTiO3 Heterostructures: A Case of Enhanced Interlayer Coupling Controlled by the Interface', 'PHYSICAL REVIEW LETTERS', '', '', 'English', 'Article', '', '', '', '', '', '', 'We report on the magnetic coupling of La0.7Sr0.3MnO3 layers through SrTiO3 spacers in La0.7Sr0.3MnO3/SrTiO3 epitaxial heterostructures. Combined aberration-corrected microscopy and electron-energy-loss spectroscopy evidence charge transfer to the empty conduction band of the titanate. Ti d electrons interact via superexchange with Mn, giving rise to a Ti magnetic moment as demonstrated by x-ray magnetic circular dichroism. This induced magnetic moment in the SrTiO3 controls the bulk magnetic and transport properties of the superlattices when the titanate layer thickness is below 1 nm.', '[Bruno, F. Y.; Garcia-Barriocanal, J.; Nemes, N. M.; Rivera-Calzada, A.; Leon, C.; Santamaria, J.] Univ Complutense Madrid, GFMC, Dept Fis Aplicada 3,', 'Bruno, FY (reprint author), Univ Complutense Madrid, GFMC, Dept Fis Aplicada 3, Campus Moncloa, E-28040 Madrid, Spain.', '', 'Spanish MICINN [MAT 2008 06517]; Consolider Ingenio [CSD2009-00013 (IMAGINE), CAM S2009-MAT 1756 (PHAMA)]; Materials Sciences and Engineering Division', 'Work at UCM was supported by Spanish MICINN Grant No. MAT 2008 06517, Consolider Ingenio CSD2009-00013 (IMAGINE), and CAM S2009-MAT 1756 (PHAMA). Work', 'Bowen M, 2003, APPL PHYS LETT, V82, P233, DOI 10.1063/1.1534619; Chakhalian J, 2006, NAT PHYS, V2, P244, DOI 10.1038/nphys272; Chakhalian J, 2007, SCI', '25', 26, 26, 'AMER PHYSICAL SOC', 'COLLEGE PK', 'ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA', '0031-9007', '', 'PHYS REV L', 'Phys. Rev.', 'APR 8', '2011', '106', '14', '', '', '', '', '', '147205', '10.1103/PhysRevLett.106.147205', '', '4', '', 'Physi', 'Physi', '747YD', 'WOS:0', 0, 0),
(457, '', 'J', 'Cortes-Gil, R;Ruiz-Gonzalez, ML;Alonso, JM;Garcia-Hernandez, M;Hernando, A;Vallet-Regi, M;Gonzalez-Calbet, JM;', 'Cortes-Gil, Raquel; Luisa Ruiz-Gonzalez, M.; Alonso, Jose M.; Garcia-Hernandez, Mar; Hernando, Antonio; Vallet-Regi, Maria; Gonzalez-Calbet, Jose M.', '', '', '', '', 'Magnetoresistance in La0.5Sr0.5MnO2.5', 'CHEMISTRY-A EUROPEAN JOURNAL', '', '', 'English', 'Article', '', '', '', '', '', 'cluster compounds; magnetoresistance; manganese; perovskite phases; spin glass', 'Resistance measurements indicate the presence of magnetoresistance in the La0.5Sr0.5MnO2.5 brownmillerite related compound. An 80% of magnetoresistance is found at 75 K. In spite of the partial break-up occurring at the 3D network of octahedra sharing corners, characteristic of the full oxygen content perovskite phase, the oxygen deficient compound exhibits complex magnetic and electric properties. Such behavior can be explained on the basis of ferromagnetic and metallic clusters randomly distributed at the octahedral layers separated from each other by an insulating antiferromagnetic matrix. AC susceptibility measurements suggest spin glass behavior at low temperature as a consequence of the competition between different magnetic interactions.', '[Cortes-Gil, Raquel; Luisa Ruiz-Gonzalez, M.; Gonzalez-Calbet, Jose M.] Univ Complutense, Dept Quim Inorgan, UCM, Fac Quim, E-28040 Madrid, Spain; [Al', 'Gonzalez-Calbet, JM (reprint author), Univ Complutense, Dept Quim Inorgan, UCM, Fac Quim, E-28040 Madrid, Spain.', 'jgcalbet@quim.ucm.es', 'Spanish Ministerio de Ciencia e Innovacion [CSD2009-00013, MAT2007-61954, MAT2008-06517-C02-01]', 'This work has been partially supported by the Spanish Ministerio de Ciencia e Innovacion grants: CSD2009-00013, MAT2007-61954 and MAT2008-06517-C02-01', 'ABBATTISTA F, 1981, CERAM INT, V7, P137, DOI 10.1016/0272-8842(81)90010-9; Alonso JM, 2007, EUR J INORG CHEM, P3350, DOI 10.1002/ejic.200700108; BAIBI', '35', 3, 3, 'WILEY-BLACKWELL', 'MALDEN', 'COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA', '0947-6539', '', 'CHEM-EUR J', 'Chem.-Eur.', 'FEB', '2011', '17', '9', '', '', '', '2709', '2715', '', '10.1002/chem.201002080', '', '7', '', 'Chemi', 'Chemi', '731HT', 'WOS:0', 0, 0),
(458, '', 'J', 'Alvarez-Serrano, I;Lopez, ML;Arillo, MA;Garcia-Hernandez, M;Rodriguez-Castellon, E;Jimenez-Lopez, A;Veiga, ML;Pico, C;', 'Alvarez-Serrano, Inmaculada; Luisa Lopez, M.; Angeles Arillo, M.; Garcia-Hernandez, Mar; Rodriguez-Castellon, Enrique; Jimenez-Lopez, A.; Luisa Veiga, M.; Pico, Carlos', '', '', '', '', 'Structural Characterization and Evolution of the Electronic Behavior of New Sr2-xGdxMnTiO6 (0 <= x <= 1) Perovskites', 'JOURNAL OF THE AMERICAN CERAMIC SOCIETY', '', '', 'English', 'Article', '', '', '', '', '', '', 'The structural and magnetic characterization of microcrystalline powders of new Ti manganites Sr2-xGdxMnTiO6 (0 < x < 1) are reported. Compositional characterization by means of thermogravimetric analysis, EDS, and XPS indicates the stoichiometry of all samples to be practically equal to the nominal one. A diminution in symmetry from cubic to orthorhombic has been detected as a function of x, being the critical composition x=0.75. Microstuctural aspects are deeply discussed from high-resolution transmission electron microscopy data and they confirm that for x < 0.5 a cubic symmetry is adopted, whereas for x >= 0.75 the samples become orthorhombic, with space group Pbnm. The complex magnetic response of the title materials is explained considering magnetic frustration derived from the presence of two magnetic sublattices (Gd and Mn), which could interact as a function of temperature and magnetic field. The existence of antiferromagnetic interactions is especially clear for low values of x, but even in these cases, hysteresis loops in the M versus H variation are obtained at 4.2 K. The global magnetic response can be understood taking into account weak ferromagnetic (FM) interactions at the Mn sublattice (Mn4+ and Mn3+ cations) together with the greater magnetic contribution of paramagnetic Gd sublattice at low temperature. No spin reversal behavior has been detected in any case. For the most doped samples, x=0.75 and 1, a predominant FM contribution of Gd sublattice seems to be operative.', '[Alvarez-Serrano, Inmaculada; Luisa Lopez, M.; Angeles Arillo, M.; Luisa Veiga, M.; Pico, Carlos] Univ Complutense, Fac Ciencias Quim, Dpto Quim Inorg', 'Alvarez-Serrano, I (reprint author), Univ Complutense, Fac Ciencias Quim, Dpto Quim Inorgan 1, E-28040 Madrid, Spain.', 'ias@quim.ucm.es', 'Spanish Ministerio de Ciencia e Innovacion (CICYT, Spain) [MAT2006-10021, MAT2010-20117]', 'Authors acknowledge the CAI (XRD and electron microscopy) centers of UCM and financial support from Spanish Ministerio de Ciencia e Innovacion, Resear', 'Alvarez-Serrano I, 2007, J PHYS D APPL PHYS, V40, P3016, DOI 10.1088/0022-3727/40/10/001; Alvarez-Serrano I, 2006, SOLID STATE SCI, V8, P37, DOI 10.10', '39', 3, 3, 'WILEY-BLACKWELL', 'HOBOKEN', '111 RIVER ST, HOBOKEN 07030-5774, NJ USA', '0002-7820', '', 'J AM CERAM', 'J. Am. Cer', 'JAN', '2011', '94', '1', '', '', '', '270', '277', '', '10.1111/j.1551-2916.2010.04054.x', '', '8', '', 'Mater', 'Mater', '703IR', 'WOS:0', 0, 0),
(459, '', 'J', 'Querejeta-Fernandez, A;Parras, M;Varela, A;del Monte, F;Garcia-Hernandez, M;Gonzalez-Calbet, JM;', 'Querejeta-Fernandez, Ana; Parras, Marina; Varela, Aurea; del Monte, Francisco; Garcia-Hernandez, Mar; Gonzalez-Calbet, Jose M.', '', '', '', '', 'Urea-Melt Assisted Synthesis of Ni/NiO Nanoparticles Exhibiting Structural Disorder and Exchange Bias', 'CHEMISTRY OF MATERIALS', '', '', 'English', 'Article', '', '', '', '', '', '', 'An easy, inexpensive urea-melt assisted route was designed for the synthesis of similar to 10 nm-sized Ni/NiO nanoparticles (NPs). The method consists of the thermal decomposition of a urea-melted medium containing a Ni(2+)-salt and involves the olygomerization and self-combustion of the organic matrix and the formation of the Ni/NiO NPs within it in a two stepped process of Ni(2+) reduction yielding Ni crystallization and subsequent inward oxidation. Control over the microstructural features of the NPs within three typical regimes was accomplished by means of the initial urea quantity. Type A samples (0.2 g urea/0.2908 g nickel nitrate) consists of NiO nanostructures which might contain dispersed Ni nuclei of a few atoms; B NPs (2 g urea/0.2908 g nickel nitrate) are made of proper small Ni cores, in the limit of the coherence length of XRD, surrounded by thick NiO shells, while C (20 g urea/0.2908 g nickel nitrate) NPs correspond to relative big Ni cores and thin NiO shells. Further control over the thickness of the NiO shell was achieved within each regime by means of the calcination time of the organic matrix, painting a whole palette of Ni(core)-NiO(shell) NPs. Magnetic characterization revealed large (for A and B) and common (C) shifts of the hysteresis loops, which were ascribed to the high disorder of the (A, B and C) NPs obtained by quenching as well as to exchange bias (EB) effects (B and C). A thorough characterization of the reaction pathway is reported.', '[Querejeta-Fernandez, Ana; Parras, Marina; Varela, Aurea; Gonzalez-Calbet, Jose M.] Univ Complutense Madrid, Fac Ciencias Quim, Dept Quim Inorgan 1, E', 'Gonzalez-Calbet, JM (reprint author), Univ Complutense Madrid, Fac Ciencias Quim, Dept Quim Inorgan 1, E-28040 Madrid, Spain.', 'jgcalbet@quim.ucm.es', 'MICINN [CSD2009-00013, MAT2007-61954, MAT2008-06517-CO2-01, MAT2009-10214]; FPU', 'Financial support from MICINN projects CSD2009-00013, MAT2007-61954, MAT2008-06517-CO2-01, and MAT2009-10214 is greatly appreciated. A.Q.-F. acknowled', 'Biesinger MC, 2009, SURF INTERFACE ANAL, V41, P324, DOI 10.1002/sia.3026; Buha J, 2007, CHEM MATER, V19, P3499, DOI 10.1021/cm0701759; Caruge JM, 2006', '56', 18, 18, 'AMER CHEMICAL SOC', 'WASHINGTON', '1155 16TH ST, NW, WASHINGTON, DC 20036 USA', '0897-4756', '', 'CHEM MATER', 'Chem. Mat.', 'DEC 28', '2010', '22', '24', '', '', '', '6529', '6541', '', '10.1021/cm1017823', '', '13', '', 'Chemi', 'Chemi', '696GD', 'WOS:0', 0, 0),
(460, '', 'J', 'Retuerto, M;Martinez-Lope, MJ;Sanchez-Benitez, J;Garcia-Hernandez, M;Fernandez-Diaz, MT;Alonso, JA;', 'Retuerto, M.; Martinez-Lope, M. J.; Sanchez-Benitez, J.; Garcia-Hernandez, M.; Fernandez-Diaz, M. T.; Alonso, J. A.', '', '', '', '', 'Synthesis, magnetic properties, and neutron diffraction study of the complex perovskites R(Cu3-xMnx)Mn4O12 (R=Pr, Nd and x=1,2)', 'JOURNAL OF APPLIED PHYSICS', '', '', 'English', 'Article', '', '', '', '', '', '', 'The new complex perovskites of formula R(Cu3-xMnx)Mn4O12 (R=Pr, Nd and x=1,2) have been prepared. The partial replacement of Cu2+ by Mn3+ cations does not involve a change in symmetry from that of the parent compounds RCu3Mn4O12, presenting a cubic structure with space group Im (3) over bar. The Mn3+ introduced at the square-planar 6b site promotes the valence mixing of Mn3+ and Mn4+ ions at the octahedral 8c site, leading to an increase in the bonding distances in the MnO6 octahedron and a slight decrease in the distances in the CuO4 polyhedron. All the compounds present a spontaneous increase in the magnetization below T-C, typical of ferro-or ferrimagnetic materials. Due to the increasing content of Mn3+ at the 8c sites, some Mn-Mn exchange interactions switch from ferromagnetic (FM) to antiferromagnetic (AFM), weakening the overall FM exchange interactions and decreasing T-C and M-S. Neutron powder diffraction (NPD) data indicate that both sublattices (square-planar and octahedral) show a parallel arrangement of the magnetic moments. (C) 2010 American Institute of Physics. [doi:10.1063/1.3498807]', '[Retuerto, M.; Martinez-Lope, M. J.; Sanchez-Benitez, J.; Garcia-Hernandez, M.; Alonso, J. A.] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain; [Fernand', 'Retuerto, M (reprint author), CSIC, Inst Ciencia Mat, Serrano 123, E-28049 Madrid, Spain.', 'mretuerto@icmm.csic.es', 'Spanish Ministry of Education [MAT2007-60536, MAT2008-06517-C02-01, CSD2009-00013]; CAM [S2009PPQ-1551]', 'We thank the financial support of the Spanish Ministry of Education to the Projects MAT2007-60536, MAT2008-06517-C02-01 and CSD2009-00013 and to the C', 'Alonso JA, 2003, APPL PHYS LETT, V83, P2623, DOI 10.1063/1.1611647; CHAHARA K, 1993, APPL PHYS LETT, V63, P1990, DOI 10.1063/1.110624; CHENAVAS J, 197', '18', 1, 1, 'AMER INST PHYSICS', 'MELVILLE', 'CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA', '0021-8979', '', 'J APPL PHY', 'J. Appl. P', 'OCT 15', '2010', '108', '8', '', '', '', '', '', '083905', '10.1063/1.3498807', '', '8', '', 'Physi', 'Physi', '674LJ', 'WOS:0', 0, 0),
(461, '', 'J', 'Retuerto, M;Martinez-Lope, MJ;Garcia-Hernandez, M;Munoz, A;Fernandez-Diaz, MT;Alonso, JA;', 'Retuerto, M.; Martinez-Lope, M. J.; Garcia-Hernandez, M.; Munoz, A.; Fernandez-Diaz, M. T.; Alonso, J. A.', '', '', '', '', 'Crystal and magnetic study of the disordered perovskites Ca(Mn0.5Sb0.5)O-3 and Ca(Fe0.5Sb0.5)O-3', 'MATERIALS RESEARCH BULLETIN', '', '', 'English', 'Article', '', '', '', '', '', 'Oxides; Neutron scattering; Magnetic structure; Magnetic properties', 'We have investigated the double perovskites Ca2MSbO6 (M = Mn, Fe) that have been prepared by solid-state reaction (M = Fe) and wet chemistry procedures (M = Mn). The crystal and magnetic structures have been studied from X-ray (XRD) and neutron powder diffraction (NPD) data. Rietveld refinements show that the crystal structures are orthorhombic (space group Pbnm) with complete disorder of M and Sb cations, so the formula should be rewritten as Ca(M0.5Sb0.5)O-3. Due to this disorder no evidences of Jahn-Teller distortion can be observed in the MnO6 octahedra of Ca(Mn0.5Sb0.5)O-3, in contrast with the ordered double perovskite Sr2MnSbO6. Ca(Fe0.5Sb0.5)O-3 behaves as an antiferromagnet with an ordered magnetic moment for Fe3+ of 1.53(4)mu(B) and a propagation vector k = 0, as investigated by low-temperature NPD. The antiferromagnetic ordering is a result of the high degree of Fe/Sb anti-site disorder of the sample, which originates the spontaneous formation of Fe-rich islands, characterized by the presence of strong Fe-O-Fe antiferromagnetic couplings with enough long-range coherence to produce a magnetic contribution perceptible by NPD. By contrast, the magnetic structure of Ca(Mn0.5Sb0.5)O-3 cannot be observed by low-temperature NPD because the magnitude of the ordered magnetic moments is below the detection threshold for neutrons. (C) 2010 Elsevier Ltd. All rights reserved.', '[Retuerto, M.; Martinez-Lope, M. J.; Garcia-Hernandez, M.; Alonso, J. A.] CSIC, Energia, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain; [Munoz, A.] U', 'Retuerto, M (reprint author), CSIC, Energia, Inst Ciencia Mat Madrid, Sor Juana Ines Cruz 3, E-28049 Madrid, Spain.', 'mretuerto@icmm.csic.es', 'Comision Interministerial de Ciencia y Tecnologia (CICyT) [MAT2007-60537, CSD2009-00013, MAT2008-06517-C02-01]', 'We thank the financial support of Comision Interministerial de Ciencia y Tecnologia (CICyT) to the project MAT2007-60537 and to the CSD2009-00013 and ', 'Alonso JA, 2000, CHEM MATER, V12, P161, DOI 10.1021/cm990512g; Alonso JA, 1997, J SOLID STATE CHEM, V128, P247, DOI 10.1006/jssc.1996.7199; ANDERSON M', '31', 6, 6, 'PERGAMON-ELSEVIER SCIENCE LTD', 'OXFORD', 'THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND', '0025-5408', '', 'MATER RES ', 'Mater. Res', 'OCT', '2010', '45', '10', '', '', '', '1449', '1454', '', '10.1016/j.materresbull.2010.06.036', '', '6', '', 'Mater', 'Mater', '644CH', 'WOS:0', 0, 0),
(462, '', 'J', 'Retuerto, M;Martinez-Lope, MJ;Munoz, A;Ruskov, T;Spirov, I;Krezhov, K;Fernandez-Diaz, MT;Garcia-Hernandez, M;Alonso, JA;', 'Retuerto, M.; Martinez-Lope, M. J.; Munoz, A.; Ruskov, T.; Spirov, I.; Krezhov, K.; Fernandez-Diaz, M. T.; Garcia-Hernandez, M.; Alonso, J. A.', '', '', '', '', 'Synthesis, structural study and magnetic properties of TbFeMnO5', 'SOLID STATE COMMUNICATIONS', '', '', 'English', 'Article', '', '', '', '', '', 'Magnetically ordered materials; Neutron scattering', 'We describe the preparation and characterization of a new ferrimagnetic oxide of composition TbFeMnO5. It has been prepared by a soft-chemistry procedure, involving the thermal treatment at moderate temperatures (600 degrees C) of citrate precursors, subsequently annealed at 900 degrees C under high oxygen pressure (200 bar). The crystallographic and magnetic structures have been studied by neutron powder diffraction (NPD) experiments, in complement with magnetization and susceptibility measurements. TbFeMnO5 is an orthorhombic, Pbam space group; the crystal structure contains infinite chains of Mn4+O6 edge-sharing octahedra running along the c axis and interconnected by Fe3+O5 pyramids and TbO8 units. Some anti-site disorder is observed from the NPD refinements: about 9% of the 4f octahedral sites are occupied by Fe3+ cations and about 18% of the pyramidal 4h positions contain Mn4+. These structural features are confirmed by Mossbauer spectroscopy: two sites for Fe3+ are identified; one of them corresponds to almost regular octahedra (at 4f positions), characterized by nearly equal Mn/Fe-O distances of 1.906 angstrom at RT (from NPD data), giving a quadrupole doublet in the Mossbauer spectra at RT; the second contributes to a more intensive doublet corresponding to a distorted square pyramid Fe3+O5 (at 4h sites), for which NPD data demonstrates an axial distortion with three sets of Mn/Fe-O distances at 1.981(4), 1.851(5) and 1.944(3) angstrom. Both doublets are broadened by the Fe/Mn disorder over these sites. TbFeMnO5 undergoes long-range magnetic ordering below T-C approximate to 175 K, as shown from magnetization, NPD and Mossbauer spectroscopy data. The propagation vector k = 0 defines a ferrimagnetic structure that initially concerns the Mn4+ and Fe3+ cations, in a magnetic arrangement defined by the basis vectors (0, 0, F-z) and (0, 0, F-z'') respectively. The Tb3+ sublattice is ordered at 2 K with a spin arrangement given by (0, 0, F-z ''''). The refined magnetic moments at this temperature are 2.66(12) mu(B) for the Mn4+, -0.8(2) mu(B) for the Fe3+ and -2.0(3) mu(B) for the Tb3+ cations. (C) 2010 Elsevier Ltd. All rights reserved.', '[Retuerto, M.; Martinez-Lope, M. J.; Garcia-Hernandez, M.; Alonso, J. A.] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain; [Munoz, A.] Univ Carlo', 'Retuerto, M (reprint author), CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain.', 'mretuerto@icmm.csic.es', 'Spanish Ministry of Education [MAT2007-60536, MAT2008-06517-C02-01, CSD2009-00013]; National Science Fund of Bulgaria [DO 02-224/08, DTK-02/77-2009]', 'We thank the financial support of the Spanish Ministry of Education to the projects MAT2007-60536, MAT2008-06517-C02-01 and CSD2009-00013; and we are ', 'Alonso JA, 1997, J PHYS-CONDENS MAT, V9, P8515, DOI 10.1088/0953-8984/9/40/017; BELAKHOVSKY M, 1971, J PHYS COLLOQUE   C1, V32, P492, DOI 10.1051/jphy', '32', 4, 4, 'PERGAMON-ELSEVIER SCIENCE LTD', 'OXFORD', 'THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND', '0038-1098', '', 'SOLID STAT', 'Solid Stat', 'OCT', '2010', '150', '37-38', '', '', '', '1831', '1836', '', '10.1016/j.ssc.2010.07.001', '', '6', '', 'Physi', 'Physi', '651OI', 'WOS:0', 0, 0),
(463, '', 'J', 'Chaboy, J;Boada, R;Piquer, C;Laguna-Marco, MA;Garcia-Hernandez, M;Carmona, N;Llopis, J;Ruiz-Gonzalez, ML;Gonzalez-Calbet, J;Fernandez, JF;Garcia, MA;', 'Chaboy, J.; Boada, R.; Piquer, C.; Laguna-Marco, M. A.; Garcia-Hernandez, M.; Carmona, N.; Llopis, J.; Ruiz-Gonzalez, M. L.; Gonzalez-Calbet, J.; Fernandez, J. F.; Garcia, M. A.', '', '', '', '', 'Evidence of intrinsic magnetism in capped ZnO nanoparticles', 'PHYSICAL REVIEW B', '', '', 'English', 'Article', '', '', '', '', '', '', 'We present here direct experimental evidence of the magnetic polarization of Zn atoms in ZnO nanoparticles capped with different materials by means of x-ray magnetic circular dichroism (XMCD). Our results demonstrate that the magnetism in this material is intrinsic and relays in the ZnO conduction band. The analysis of both x-ray absorption spectroscopy and XMCD signals points out the formation of a well-defined interface between ZnO and the capping molecule in which the exotic magnetism arises at the hybridized band formed among Zn and the bonding atom of the molecule. The magnetic properties of these systems should critically depend on the details of this interface which may offer a new insight into the different observations for seemingly identical materials.', '[Chaboy, J.; Boada, R.; Piquer, C.] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain; [Chaboy, J.; Boada, R.; Piquer, C.] Univ Za', 'Chaboy, J (reprint author), Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain.', '', 'Spanish CICYT [MAT2008-06542-C04-01, MAT2008-06517-C02-01, CSD2009-00013, FIS-2008-06249]; EU [LSHB-CT-2006-037639]; Ministerio de Eduacion y Ciencia ', 'This work was partially supported by Spanish CICYT under Grants No. MAT2008-06542-C04-01, No. MAT2008-06517-C02-01, No. CSD2009-00013, and No. FIS-200', 'ANDERSON AB, 1986, J AM CHEM SOC, V108, P1385, DOI 10.1021/ja00267a004; Barla A, 2007, PHYS REV B, V76, DOI 10.1103/PhysRevB.76.125201; Carmeli I, 200', '28', 38, 38, 'AMER PHYSICAL SOC', 'COLLEGE PK', 'ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA', '1098-0121', '', 'PHYS REV B', 'Phys. Rev.', 'AUG 11', '2010', '82', '6', '', '', '', '', '', '064411', '10.1103/PhysRevB.82.064411', '', '9', '', 'Physi', 'Physi', '637JG', 'WOS:0', 0, 0),
(464, '', 'J', 'Alvarez-Serrano, I;Arillo, MA;Garcia-Hernandez, M;Lopez, ML;Pico, C;Veiga, ML;', 'Alvarez-Serrano, Inmaculada; Arillo, M. Angeles; Garcia-Hernandez, Mar; Luisa Lopez, M.; Pico, Carlos; Luisa Veiga, M.', '', '', '', '', 'Microstructural Origin of Magnetic and Giant Dielectric Behavior of Sr2MnTiO6-delta Perovskite Nanocrystals', 'JOURNAL OF THE AMERICAN CERAMIC SOCIETY', '', '', 'English', 'Article', '', '', '', '', '', '', 'Polycrystalline Sr2MnTiO6-delta (SMTO) nanosized powders have been prepared by the liquid mix technique. Thermogravimetric experiments show the presence of small amounts (4%) of Mn3+ in the sample. A systematic structural study shows the stabilization of nanocrystals of about 50 nm, which crystallize in an space group Pm3m, i.e. the arystotype perovskite. Microstructural analysis permits us to interpret the electrical and magnetic properties in terms of a high degree of structural disorder including intergrowths. Although the existence of polytypes in small regions is observed, the title sample can be globally (macroscopically) considered as cubic. A spin-glass type magnetic frustration behavior has been detected using different techniques: DC and AC magnetization variation with temperature and magnetic field. SMTO shows a very high dielectric constant, approaching 105 at 580 K, and being practically temperature independent above 680 K. Also, the dependence with frequency is negligible below 580 K. Electrical behavior has been interpreted considering the nanoscaled size of particles. The high semiconductive character of the sample perovskite is the key feature of the giant dielectric constant observed.', '[Alvarez-Serrano, Inmaculada; Arillo, M. Angeles; Luisa Lopez, M.; Pico, Carlos; Luisa Veiga, M.] Univ Complutense, Fac Ciencias Quim, Dpto Quim Inorg', 'Alvarez-Serrano, I (reprint author), Univ Complutense, Fac Ciencias Quim, Dpto Quim Inorgan 1, E-28040 Madrid, Spain.', 'ias@quim.ucm.es', 'CICYT, Spain [MAT2006-10021]', 'This work was supported by the research Project MAT2006-10021 (CICYT, Spain) is acknowledged.', 'Adams TB, 2002, ADV MATER, V14, P1321, DOI 10.1002/1521-4095(20020916)14:18<1321::AID-ADMA1321>3.0.CO;2-P; Alvarez-Serrano I, 2007, J PHYS D APPL PHYS', '41', 8, 8, 'WILEY-BLACKWELL', 'HOBOKEN', '111 RIVER ST, HOBOKEN 07030-5774, NJ USA', '0002-7820', '', 'J AM CERAM', 'J. Am. Cer', 'AUG', '2010', '93', '8', '', '', '', '2311', '2319', '', '10.1111/j.1551-2916.2010.03734.x', '', '9', '', 'Mater', 'Mater', '639LW', 'WOS:0', 0, 0),
(465, '', 'J', 'Nemes, NM;Visani, C;Leon, C;Garcia-Hernandez, M;Simon, F;Feher, T;Velthuis, SGET;Hoffmann, A;Santamaria, J;', 'Nemes, N. M.; Visani, C.; Leon, C.; Garcia-Hernandez, M.; Simon, F.; Feher, T.; Velthuis, S. G. E. te; Hoffmann, A.; Santamaria, J.', '', '', '', '', 'Magnetic memory based on La0.7Ca0.3MnO3/YBa2Cu3O7/La0.7Ca0.3MnO3 ferromagnet/superconductor hybrid structures', 'APPLIED PHYSICS LETTERS', '', '', 'English', 'Article', '', '', '', '', '', 'barium compounds; calcium compounds; ferromagnetic materials; high-temperature superconductors; lanthanum compounds; magnetic anisotropy; magnetic sto', 'We report a memory concept utilizing ferromagnet/superconductor/ferromagnet La0.7Ca0.3MnO3/YBa2Cu3O7/La0.7Ca0.3MnO3 thin film hybrid structures. The orientation of the magnetic field with respect to the ferromagnetic easy axis has a strong effect on superconductivity as indicated by a strong variation in the magnetoresistance (MR). MR can be controlled by rotating a small magnetic field applied in the plane of the film in a way that is determined by the in-plane biaxial magnetic anisotropy. The proposed memory device has the advantages of superconducting detection elements (fast response and low dissipation), small (100-150 Oe) writing fields, and resistance read-out without need for applied field. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3464960]', '[Nemes, N. M.; Visani, C.; Leon, C.; Santamaria, J.] Univ Complutense Madrid, Dpto Fis Aplicada 3, GFMC, E-28040 Madrid, Spain; [Garcia-Hernandez, M.]', 'Nemes, NM (reprint author), Univ Complutense Madrid, Dpto Fis Aplicada 3, GFMC, Campus Moncloa, E-28040 Madrid, Spain.', 'jacsan@fis.ucm.es', 'U.S.-Spain NSF Materials World Network [709584]; U.S. Department of Energy, Basic Energy Science [DE-AC02-06CH11357, DE-AC02NA25396]; Spanish MICINN [', 'We thank A. Goldman for fruitful discussions within the framework of the joint U.S.-Spain NSF Materials World Network Grant No. 709584. Work was suppo', 'Cyrille MC, 2000, PHYS REV B, V62, P3361, DOI 10.1103/PhysRevB.62.3361; Endo T, 1996, PHYS REV B, V54, pR3750; Gu JY, 2002, PHYS REV LETT, V89, DOI 10', '19', 9, 11, 'AMER INST PHYSICS', 'MELVILLE', 'CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA', '0003-6951', '', 'APPL PHYS ', 'Appl. Phys', 'JUL 19', '2010', '97', '3', '', '', '', '', '', '032501', '10.1063/1.3464960', '', '3', '', 'Physi', 'Physi', '630EO', 'WOS:0', 0, 0),
(466, '', 'J', 'Ramos, MA;Barzola-Quiquia, J;Esquinazi, P;Munoz-Martin, A;Climent-Font, A;Garcia-Hernandez, M;', 'Ramos, M. A.; Barzola-Quiquia, J.; Esquinazi, P.; Munoz-Martin, A.; Climent-Font, A.; Garcia-Hernandez, M.', '', '', '', '', 'Magnetic properties of graphite irradiated with MeV ions', 'PHYSICAL REVIEW B', '', '', 'English', 'Article', '', '', '', '', '', '', 'We have studied the change in the magnetic properties produced on highly oriented pyrolytic graphite samples by irradiation of H, C, and N ions in the mega-electron-volt energy range. The use of specially made sample holders for the magnetic measurements provided high reproducibility allowing us to obtain directly the irradiation effects without any corrections or subtractions. Our results show that three magnetic phenomena are triggered by the defects produced by the irradiation, namely, Curie-type paramagnetism, ferromagnetism and an anomalous paramagnetic state that appears as precursor of the magnetic ordered state. Using SRIM simulations to estimate the amount of vacancies produced by the irradiation, the Curie-type paramagnetic response indicates an effective Bohr magneton number per nominally produced vacancy p=0.27 perpendicular to 0.02 mu(B). Direct measurements of the surface sample temperature during irradiation and the decrease in the (as-received) paramagnetic as well as ferromagnetic contributions after irradiation indicate that self-heating is one of the causes for small yield of ferromagnetism. Taking into account the hydrogen distribution in the virgin samples, the obtained results indicate that the induced ferromagnetism appears when the average vacancy distance is similar to 2 nm in the near surface region.', '[Ramos, M. A.; Munoz-Martin, A.; Climent-Font, A.] Univ Autonoma Madrid, CMAM, E-28049 Madrid, Spain; [Ramos, M. A.; Munoz-Martin, A.; Climent-Font, A', 'Ramos, MA (reprint author), Univ Autonoma Madrid, CMAM, E-28049 Madrid, Spain.', 'miguel.ramos@uam.es; esquin@physik.uni-leipzig.de', 'Deutsche Forschungsgemeinschaft [DFG ES 86/16-1]; Spanish Ministry of Science [CSD2007-00010, MAT2008-06517-c02-01]; DAAD [D/07/13369]', 'We gratefully acknowledge the collaboration and support from D. Spemann and T. Butz, and discussions with M. Ziese. M. A. R. thanks Nuria Gordillo for', 'Agullo- Lopez F., 1988, POINT DEFECTS MAT; ANWAND W, UNPUB; Arndt A, 2009, PHYS REV B, V80, DOI 10.1103/PhysRevB.80.195402; ASHCROFT NW, 1981, SOLID S', '58', 35, 35, 'AMER PHYSICAL SOC', 'COLLEGE PK', 'ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA', '1098-0121', '', 'PHYS REV B', 'Phys. Rev.', 'JUN 3', '2010', '81', '21', '', '', '', '', '', '214404', '10.1103/PhysRevB.81.214404', '', '16', '', 'Physi', 'Physi', '605YV', 'WOS:0', 0, 0),
(467, '', 'J', 'Martin-Hernandez, F;Garcia-Hernandez, MM;', 'Martin-Hernandez, F.; Garcia-Hernandez, M. M.', '', '', '', '', 'Magnetic properties and anisotropy constant of goethite single crystals at saturating high fields', 'GEOPHYSICAL JOURNAL INTERNATIONAL', '', '', 'English', 'Article', '', '', '', '', '', 'Magnetic fabrics and anisotropy; Magnetic mineralogy and petrology; Rock and mineral magnetism', 'P>The applied fields in previous studies of goethite''s magnetic properties were often not sufficiently high to reach reversible magnetization behaviour of the hard magnetic iron oxide (alpha-FeOOH). Existing data of its magnetic anisotropy constant are fairly scattered that hampers the further development of more elaborate models of remanence acquisition, magnetic susceptibility behaviour or trends in microcoercivity. Classic rock magnetic properties (magnetization of remanence M(r), saturation magnetization M(s) and coercive force B(c)) and the first anisotropy constant K on six goethite natural crystals have been determined at room and low temperature using hysteresis up to 9 T. After a detailed analysis of the magnetic properties of the samples, a mean value of K = 90 +/- 20 Jm-3 has been evaluated at room temperature and K = 210 +/- 40 Jm-3 at 5 K for pure goethite.', '[Martin-Hernandez, F.] Univ Complutense, Fac Phys, Dept Geophys, E-28040 Madrid, Spain; [Garcia-Hernandez, M. M.] CSIC, Inst Ciencia Mat Madrid, E-280', 'Martin-Hernandez, F (reprint author), Univ Complutense, Fac Phys, Dept Geophys, E-28040 Madrid, Spain.', 'fatima@fis.ucm.es', 'Spanish Ministry of Science [MAT2008-06517-c02-01]', 'We kindly acknowledge revision of the manuscript by G. McIntosh and M.J. Dekkers and one anonymous reviewer for the valuable suggestions. The paper ha', 'Balsam W, 2004, EARTH PLANET SC LETT, V223, P335, DOI 10.1016/j.epsl.2004.04.023; BANERJEE S, 1970, EARTH PLANET SC LETT, V8, P197, DOI 10.1016/0012-8', '42', 7, 7, 'WILEY-BLACKWELL', 'MALDEN', 'COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA', '0956-540X', '', 'GEOPHYS J ', 'Geophys. J', 'MAY', '2010', '181', '2', '', '', '', '756', '761', '', '10.1111/j.1365-246X.2010.04566.x', '', '6', '', 'Geoch', 'Geoch', '583RO', 'WOS:0', 0, 0),
(468, '', 'J', 'Retuerto, M;Martinez-Lope, MJ;de la Calle, C;Martinez-Coronado, R;Garcia-Hernandez, M;Alonso, JA;Fernandez-Diaz, MT;', 'Retuerto, M.; Martinez-Lope, M. J.; de la Calle, C.; Martinez-Coronado, R.; Garcia-Hernandez, M.; Alonso, J. A.; Fernandez-Diaz, M. T.', '', '', '', '', 'The Ho(2)MnRuO(7) pyrochlore oxide: Magnetic structure versus magnetic frustration', 'JOURNAL OF APPLIED PHYSICS', '', '', 'English', 'Article', '', '', '', '', '', '', 'A pyrochlore-like phase of composition Ho(2)MnRuO(7) has been synthesized by a soft-chemistry procedure followed by thermal treatments at moderate temperatures up to 900 degrees C for 12 h in air. It has been characterized by x-ray diffraction and neutron powder diffraction (NPD), as well as dc and ac susceptibilities. As in the parent Ho(2)Mn(2)O(7) oxide, the magnetic Mn and Ru ions statistically occupy the 16c sites in a cubic unit cell with space group Fd (3) over barm, which define a potentially frustrated three-dimensional array of corner sharing (Mn, Ru)(4) tetrahedra. The dc and ac magnetic susceptibilities of Ho(2)MnRuO(7) display a sharp increase near 60 K. In addition, the field-cooled and zero-field-cooled curves diverge below 30 K. The ac data present frequency variability below 60 K and broad frequency dependent maxima at lower temperatures (similar to 30 K), suggesting a spin-glass like behavior similar to Ho(2)Mn(2)O(7). However, a low-temperature NPD study of the magnetic structure unveils an antiferromagnetic coupling of two subsets of Mn(4+)/Ru(4+) spins, indicating that the magnetic frustration is partially relieved by the random distribution of Mn and Ru over the 16c sites; at lower temperatures there is a polarization of the Ho(3+) magnetic moments, which also participate in the magnetic structure. Under an external magnetic field the Ho moments become totally polarized, giving a saturation magnetization at 2 K of 10.8 mu(B)/f.u. at 5 T. (C) 2010 American Institute of Physics. [doi:10.1063/1.3393994]', '[Retuerto, M.; Martinez-Lope, M. J.; de la Calle, C.; Martinez-Coronado, R.; Garcia-Hernandez, M.; Alonso, J. A.] CSIC, Inst Ciencia Mat Madrid, E-280', 'Retuerto, M (reprint author), CSIC, Inst Ciencia Mat Madrid, Plaza Murillo 2, E-28049 Madrid, Spain.', 'mretuerto@icmm.csic.es', '', '', 'Alonso J A, 1999, PHYS REV B, V60; Alonso JA, 2000, CHEM MATER, V12, P1127, DOI 10.1021/cm9911924; Alonso JA, 2000, APPL PHYS LETT, V76, P3274, DOI 10', '28', 1, 1, 'AMER INST PHYSICS', 'MELVILLE', 'CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA', '0021-8979', '', 'J APPL PHY', 'J. Appl. P', 'MAY 1', '2010', '107', '9', '', '', '', '', '', '093919', '10.1063/1.3393994', '', '7', '', 'Physi', 'Physi', '598KC', 'WOS:0', 0, 0),
(469, '', 'J', 'Confalonieri, GAB;Pirota, KR;Vazquez, M;Nemes, NM;Garcia-Hernandez, M;Knobel, M;Batallan, F;', 'Badini Confalonieri, G. A.; Pirota, K. R.; Vazquez, M.; Nemes, N. M.; Garcia-Hernandez, M.; Knobel, M.; Batallan, F.', '', '', '', '', 'Magnetic and transport properties in ordered arrays of permalloy antidots and thin films', 'JOURNAL OF APPLIED PHYSICS', '', '', 'English', 'Article', '', '', '', '', '', '', 'The magnetotransport behaviors of two types of permalloy nanostructures, thin films and antidots, are presented and discussed. Antidots samples were prepared by sputtering a Ni(80)Fe(20) layer on top of a nanoporous alumina membrane. A counterpart continuous thin film grown on a continuous Si substrate was also prepared. The magnetoresistance (MR) was measured both as a function of the external applied magnetic field and of the angular orientation, and thus compared with the magnetization curves. The introduction of antidots is found to reduce the anisotropic MR and the angular dependence of the MR, simultaneously increasing the coercive field of the samples. The influence of the sample geometry on the perpendicular MR behavior is reported and discussed. (C) 2010 American Institute of Physics. [doi:10.1063/1.3383039]', '[Badini Confalonieri, G. A.; Vazquez, M.; Nemes, N. M.; Garcia-Hernandez, M.; Batallan, F.] Inst Ciencia Mat Madrid, Madrid 28049, Spain; [Pirota, K. ', 'Confalonieri, GAB (reprint author), Inst Ciencia Mat Madrid, Campus Cantoblanco, Madrid 28049, Spain.', 'gabadinic@yahoo.com', '', '', 'Adeyeye AO, 1997, APPL PHYS LETT, V70, P3164, DOI 10.1063/1.119121; Campbell I., 1982, FERROMAGNETIC MAT, V3; Castano FJ, 2004, APPL PHYS LETT, V85, P', '26', 10, 10, 'AMER INST PHYSICS', 'MELVILLE', 'CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA', '0021-8979', '', 'J APPL PHY', 'J. Appl. P', 'APR 15', '2010', '107', '8', '', '', '', '', '', '083918', '10.1063/1.3383039', '', '5', '', 'Physi', 'Physi', '591LX', 'WOS:0', 0, 0),
(470, '', 'J', 'Visani, C;Nemes, NM;Rocci, M;Sefrioui, Z;Leon, C;te Velthuis, SGE;Hoffmann, A;Fitzsimmons, MR;Simon, F;Feher, T;Garcia-Hernandez, M;Santamaria, J;', 'Visani, C.; Nemes, N. M.; Rocci, M.; Sefrioui, Z.; Leon, C.; te Velthuis, S. G. E.; Hoffmann, A.; Fitzsimmons, M. R.; Simon, F.; Feher, T.; Garcia-Hernandez, M.; Santamaria, J.', '', '', '', '', 'Directionally controlled superconductivity in ferromagnet/superconductor/ferromagnet trilayers with biaxial easy axes', 'PHYSICAL REVIEW B', '', '', 'English', 'Article', '', '', '', '', '', '', 'We report on the magnetic anisotropy controlled modulation of the superconductivity in La(0.7)Ca(0.3)MnO(3)/YBa(2)Cu(3)O(7-delta)/La(0.7)Ca(0.3)MnO(3) ferromagnet/superconductor/ferromagnet hybrids with biaxial easy axes. The magnetoresistance (MR) is determined by the local misalignment of the magnetizations in the two layers and exhibits a positive MR plateau for antiparallel alignment along the easy axes and negative MR peaks at the coercive field near the hard axes. This evidences the importance of spin-dependent interfacial scattering effects (as opposed to stray fields) in the MR behavior of superconducting oxide inverse spin switches.', '[Visani, C.; Nemes, N. M.; Rocci, M.; Sefrioui, Z.; Leon, C.; Santamaria, J.] Univ Complutense Madrid, GFMC, Depto Fis Aplicada 3, E-28040 Madrid, Spa', 'Visani, C (reprint author), Univ Complutense Madrid, GFMC, Depto Fis Aplicada 3, Campus Moncloa, E-28040 Madrid, Spain.', '', 'U. S.-Spain NSF Materials World Network [709584]; U. S. Department of Energy, Basic Energy Science [DE-AC02-06CH11357, DE-AC02NA25396]; Spanish MICINN', 'We thank A. Goldman for fruitful discussions within the framework of the joint U. S.-Spain NSF Materials World Network under Grant No. 709584. This wo', 'Albrecht J, 2007, NEW J PHYS, V9, DOI 10.1088/1367-2630/9/10/379; BAIBICH MN, 1988, PHYS REV LETT, V61, P2472, DOI 10.1103/PhysRevLett.61.2472; Berger', '44', 12, 12, 'AMER PHYSICAL SOC', 'COLLEGE PK', 'ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA', '1098-0121', '', 'PHYS REV B', 'Phys. Rev.', 'MAR 1', '2010', '81', '9', '', '', '', '', '', '094512', '10.1103/PhysRevB.81.094512', '', '7', '', 'Physi', 'Physi', '577FI', 'WOS:0', 0, 0),
(471, '', 'J', 'Buonsanti, R;Grillo, V;Carlino, E;Giannini, C;Gozzo, F;Garcia-Hernandez, M;Garcia, MA;Cingolani, R;Cozzoli, PD;', 'Buonsanti, Raffaella; Grillo, Vincenzo; Carlino, Elvio; Giannini, Cinzia; Gozzo, Fabia; Garcia-Hernandez, Mar; Angel Garcia, Miguel; Cingolani, Roberto; Cozzoli, P. Davide', '', '', '', '', 'Architectural Control of Seeded-Grown Magnetic-Semicondutor Iron Oxide-TiO2 Nanorod Heterostructures: The Role of Seeds in Topology Selection', 'JOURNAL OF THE AMERICAN CHEMICAL SOCIETY', '', '', 'English', 'Article', '', '', '', '', '', '', 'A colloidal nonaqueous approach to semiconductor-magnetic hybrid nanocrystals (HNCs) with selectable heterodimer topologies and tunable geometric parameters is demonstrated Brookite TiO2 nanorods, distinguished by a curved shape-tapered profile with richly faceted terminations, are exploited as substrate seeds onto which a single spherical domain of inverse spinel iron oxide can be epitaxially grown at either one apex or any location along their longitudinal sidewalls in a hot surfactant environment The topologically controlled arrangement of the component material lattices, the crystallographic relationships holding between them, and strain distribution across individual heterostructures have been studied by combining X-ray diffraction and absorption techniques with high-resolution transmission electron microscopy investigations. Supported by such structural knowledge, the synthetic achievements are interpreted within the frame of various mechanistic models offering complementary views of HNC formation The different HNC architectures are concluded to be almost equivalent in terms of surface-interface energy balance associated with their formation HNC topology selection is rationalized on the basis of a diffusion-limited mechanism allowing iron oxide heterogeneous nucleation and growth on the TiO2 nanorods to switch from a thermodynamically controlled to a kinetically overdriven deposition regime, in which the anisotropic reactivity offered by the uniquely structured seeds is accentuated under high spatially inhomogeneous monomer fluxes Finally, the multifunctional capabilities of the heterostructures are highlighted through illustration of their magnetic and photocatalytic properties, which have been found to diverge from those otherwise exhibited by their individual material components and physical mixture counterparts', '[Buonsanti, Raffaella; Cozzoli, P. Davide] Univ Salento, Scuola Super ISUFI, Distretto Tecnol ISUFI, I-73100 Lecce, Italy; [Buonsanti, Raffaella; Cozz', 'Cozzoli, PD (reprint author), Univ Salento, Scuola Super ISUFI, Distretto Tecnol ISUFI, Via Arnesano Km 5, I-73100 Lecce, Italy.', '', 'Spanish Ministry of Science and Education [FIS-2008-06249, MAT2008-06517-C02-01]', 'This work was partially supported by the Spanish Ministry of Science and Education through the projects FIS-2008-06249 and MAT2008-06517-C02-01 We ack', 'Ao YH, 2008, SEP PURIF TECHNOL, V61, P436, DOI 10.1016/j.seppur.2007.12.007; Arcon I, 2005, VACUUM, V80, P178, DOI 10.1016/j.vacuum.2005.08.012; Batll', '', 0, 0, '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', 0, 0),
(472, '', 'J', 'Garcia-Barriocanal, J;Bruno, FY;Rivera-Calzada, A;Sefrioui, Z;Nemes, NM;Garcia-Hernandez, M;Rubio-Zuazo, J;Castro, GR;Varela, M;Pennycook, SJ;Leon, C;Santamaria, J;', 'Garcia-Barriocanal, Javier; Bruno, Flavio Y.; Rivera-Calzada, Alberto; Sefrioui, Zouhair; Nemes, Norbert M.; Garcia-Hernandez, Mar; Rubio-Zuazo, Juan; Castro, German R.; Varela, Maria; Pennycook, Stephen J.; Leon, Carlos; Santamaria, Jacobo', '', '', '', '', 'Charge Leakage at LaMnO3/SrTiO3 Interfaces', 'ADVANCED MATERIALS', '', '', 'English', 'Article', '', '', '', '', '', '', 'Direct evidence for charge leakage at the interface of epitaxial SrTiO3/LaMnO3 superlattices with atomically sharp interfaces is provided. The direction of charge leakage can be reversed by changing the LMO/STO thickness ratio. This result will be important for the understanding of some of the reported limitations of oxide devices involving manganite/titanate interfaces.', '[Garcia-Barriocanal, Javier; Bruno, Flavio Y.; Rivera-Calzada, Alberto; Sefrioui, Zouhair; Nemes, Norbert M.; Leon, Carlos; Santamaria, Jacobo] Univ C', 'Santamaria, J (reprint author), Univ Complutense Madrid, Dpto Fis Aplicada 3, GFMC, E-28040 Madrid, Spain.', 'jacsan@fis.ucm.es', 'Division of Materials Sciences and Engineering of the US Department of Energy; MICINN [MAT200806517]', 'The authors acknowledge Julia Luck for the preparation of the STEM specimen, Matt Chisholm for the LTO films and Masashi Watanabe for the Digital Micr', 'ABBATE M, 1991, PHYS REV B, V44, P5419, DOI 10.1103/PhysRevB.44.5419; Aruta C, 2006, J APPL PHYS, V100, DOI 10.1063/1.2217983; BERGER SD, 1982, NATURE', '33', 49, 50, 'WILEY-BLACKWELL', 'MALDEN', 'COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA', '0935-9648', '', 'ADV MATER', 'Adv. Mater', 'FEB 2', '2010', '22', '5', '', '', '', '627', '+', '', '10.1002/adma.200902263', '', '7', '', 'Chemi', 'Chemi', '556TP', 'WOS:0', 0, 0),
(473, '', 'J', 'de la Calle, C;Alonso, JA;Martinez-Lope, MJ;Retuerto, M;Garcia-Hernandez, M;Fernandez-Diaz, MT;', 'de la Calle, Cristina; Alonso, Jose A.; Martinez-Lope, Maria J.; Retuerto, Maria; Garcia-Hernandez, Mar; Fernandez-Diaz, Maria T.', '', '', '', '', 'Ru-Ru Metal-Metal Bonding in the Chains of Edge-Sharing Octahedra of NdMn1.5Ru0.5O5: A Neutron Powder Diffraction and Magnetic Study', 'EUROPEAN JOURNAL OF INORGANIC CHEMISTRY', '', '', 'English', 'Article', '', '', '', '', '', 'Ruthenium; Metal-metal interactions; Chain structures; Multiferroic oxides; Spin-lass behavior; Neutron diffraction', 'Four members of a new series of oxides of nominal stoichiometry NdMn2-xRuxO5 (x = 0.1, 0.2, 0.4, 0.5) have been prepared in polycrystalline form by wet.-chemistry procedures followed by thermal treatment at 1000 degrees C. NdMn2-xRuxO5 materials are isostructural with NdMn2O5. Their crystal structures have been refined from XRD data and, for the x = 0.5 oxide, from NPD data in the space group Pbam. The crystal contains infinite chains of (Mn,Ru)O-4+(6), octahedra sharing edges, linked together by dimeric (Mn)O-3+(5) square pyramidal units and NdO8 polyhedra. There is a slight anti-site disordering effect, implying that some Ru cations are introduced at the pyramidal positions, For x = 0.5, the crystallographic formula is Nd+3(Mn0.572(4)4+Ru0.428(4)4+)(oct)(Mn-0.964(8)(3+)-Ru3+ (0.036(8)))(pyr)O-4.92(4). The abrupt contraction of the c axis for x = 0.5, together with the short (Mn,Ru)-(Mn,Ru) distances (2.60 angstrom) observed within the chains of octahedra suggest the presence of Ru-Ru metal bonding for this composition. The magnetic properties are characteristic of spin-glasses, as confirmed by ac susceptibility measurements.', '[de la Calle, Cristina; Alonso, Jose A.; Martinez-Lope, Maria J.; Retuerto, Maria; Garcia-Hernandez, Mar] CSIC, Inst Ciencia Mat Madrid, E-28049 Madri', 'de la Calle, C (reprint author), CSIC, Inst Ciencia Mat Madrid, Cantoblanco, E-28049 Madrid, Spain.', 'c.delacalle@icmm.csic.es', '', '', 'Alonso JA, 2005, EUR J INORG CHEM, P2600, DOI 10.1002/ejic.200401057; Alonso JA, 1997, J PHYS-CONDENS MAT, V9, P8515, DOI 10.1088/0953-8984/9/40/017; ', '29', 0, 0, 'WILEY-BLACKWELL', 'MALDEN', 'COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA', '1434-1948', '', 'EUR J INOR', 'Eur. J. In', 'FEB', '2010', '', '5', '', '', '', '781', '789', '', '10.1002/ejic.200900626', '', '9', '', 'Chemi', 'Chemi', '559RC', 'WOS:0', 0, 0),
(474, '', 'J', 'Nemes, NM;Visani, C;Sefrioui, Z;Leon, C;Santamaria, J;Iglesias, M;Mompean, F;Garcia-Hernandez, M;', 'Nemes, N. M.; Visani, C.; Sefrioui, Z.; Leon, C.; Santamaria, J.; Iglesias, M.; Mompean, F.; Garcia-Hernandez, M.', '', '', '', '', 'Exchange-bias-modulated inverse superconducting spin switch in CoO/Co/YBa2Cu3O7-delta/La0.7Ca0.3MnO3 thin film hybrids', 'PHYSICAL REVIEW B', '', '', 'English', 'Article', '', '', '', '', '', '', 'We examine the interplay between ferromagnetism and superconductivity in bilayer and trilayer heterostructures based on Co, YBa2Cu3O7-delta (YBCO), and La0.7Ca0.3MnO3 (LCMO) thin films grown on SrTiO3 substrates with typical thicknesses of 10-15 nm. We have measured magnetoresistance below the resistive-superconducting onset of the YBCO. Naturally oxidized antiferromagnetic CoO top layer films give rise to pronounced exchange bias, modifying the coercive field of the Co by several hundred Oe. This allows separating effects at coercivity, such as stray fields, from those of parallel vs. antiparallel magnetic alignment between top and bottom ferromagnetic layers. In bilayers of Co/YBCO and of LCMO/YBCO, we observe a small magnetoresistance peak centered at the coercive field of the ferromagnetic layer of at most 20%, which we attribute to the effect of stray fields generated in the domain state of the ferromagnet. In the case of the CoO/Co/YBCO/LCMO/SrTiO3 trilayer, aside from the peaks at coercivity, we observe a well-defined plateau of the magnetoresistance extending between the coercive fields of the LCMO and Co, with a width that is modified by the exchange-biased Co layer. Reactivity between Co and YBCO at the interface gives rise to a progressive deterioration in the superconducting transition temperature. Aged samples display magnetoresistance peaks at the coercive fields of the Co and LCMO characteristic of stray fields without the magnetoresistance plateau between them.', '[Nemes, N. M.; Visani, C.; Sefrioui, Z.; Leon, C.; Santamaria, J.] Univ Complutense Madrid, GFMC, Dept Fis Aplicada 3, E-28040 Madrid, Spain; [Nemes, ', 'Nemes, NM (reprint author), Univ Complutense Madrid, GFMC, Dept Fis Aplicada 3, E-28040 Madrid, Spain.', 'nmnemes@fis.ucm.es', 'joint US-Spain NSF Materials World Network [709584]; Ramon y Cajal; Spanish Ministry for Science and Innovation [MAT2007-30922E, MAT2008-06517]', 'We thank A. Goldman for fruitful discussions within the framework of the joint US-Spain NSF Materials World Network Grant No. 709584. This work has be', 'Aladyshkin AY, 2009, SUPERCOND SCI TECH, V22, DOI 10.1088/0953-2048/22/5/053001; Bergeret FS, 2005, REV MOD PHYS, V77, P1321, DOI 10.1103/RevModPhys.7', '40', 4, 4, 'AMER PHYSICAL SOC', 'COLLEGE PK', 'ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA', '1098-0121', '', 'PHYS REV B', 'Phys. Rev.', 'JAN', '2010', '81', '2', '', '', '', '', '', '024512', '10.1103/PhysRevB.81.024512', '', '10', '', 'Physi', 'Physi', '548XC', 'WOS:0', 1, 0),
(475, '', 'J', 'Martins, JP;Martin-Ramos, P;Coya, C;Silva, MR;Eusebio, MES;de Andres, A;Alvarez, AL;Martin-Gil, J;', 'Martins, Joao P.; Martin-Ramos, Pablo; Coya, Carmen; Silva, Manuela Ramos; Eusebio, M. Ermelinda S.; de Andres, Alicia; Alvarez, Angel L.; Martin-Gil, Jesus', '', '', '', '', 'Highly luminescent pure-red-emitting fluorinated beta-diketonate europium(III) complex for full solution-processed OLEDs', 'JOURNAL OF LUMINESCENCE', '', '', 'English', 'Article', '', '', '', '', '', 'Europium(III); beta-diketonate; Photoluminescence; Electroluminescence; OLED; Solution-processed', 'Current manufacturing technologies for OLEDs involve the use of expensive high vacuum techniques and call for thermal stability requirements which are not fulfilled by many materials. These problems disappear when the OLED films are deposited directly from solution. In this study, we have designed, synthesized and characterized a novel octacoordinated complex, Tris(1-(4-chlorophenyl)-4,4,4-trifluoro-1,3-butanedionate)mono(bathophenanthroline) europium(III), to be used as a "complex-only" emissive layer in wet-processed OLEDs. Upon excitation in the UV region, very efficient energy transfer from the ligands to Eu3+ takes place, giving rise to intense red emission with very high monochromaticity (R=19), both in powder and as a thin film. The decay times of 754 mu s (powder) and 620 mu s (thin film) are comparable to those of the most efficient Eu3+ beta-diketonate complexes reported to date. The same energy transfer leading to saturated red and narrow emission is also observed in the OLED device (glass/ ITO/PEDOT:PSS/[Eu(cbtfa)(3)(bath)]/Ca/Al) when biased at >5.2 V. Its high quantum efficiency (similar to 6%), good thermal stability up to 200 degrees C and adequate thin film forming properties make this material a promising chromophore for cost-effective OLEDs. (C) 2014 Elsevier B.V. All rights reserved.', '[Martins, Joao P.; Martin-Ramos, Pablo; Silva, Manuela Ramos] Univ Coimbra, CEMDRX, Dept Phys, P-3004516 Coimbra, Portugal; [Martins, Joao P.] SESARAM', 'Coya, C (reprint author), Univ Coimbra, CEMDRX, Dept Phys, Rua Larga, P-3004516 Coimbra, Portugal.', 'carmen.coya@urjc.es', 'Fundacion Iberdrola; Fundacao para a Ciancia e a Tecnologia (FCT) [PTDC/FIS/102284/2008, PEst-C/FIS/UI0036/2011]; Spanish Ministerio de Economia y Com', 'J.P. Martins would like to thank Dr. Claudia Arranja, Dr. Catherine S. de Castro and Dr. Joao Pina for their support with the PL measurements of powde', 'BHAUMIK ML, 1964, J CHEM PHYS, V40, P3711, DOI 10.1063/1.1725078; Biju S, 2009, J MATER CHEM, V19, P5179, DOI 10.1039/b905304b; Biju S, 2006, INORG CH', '63', 0, 0, 'ELSEVIER SCIENCE BV', 'AMSTERDAM', 'PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS', '0022-2313', '', 'J LUMIN', 'J. Lumines', 'MAR', '2015', '159', '', '', '', '', '17', '25', '', '10.1016/j.jlumin.2014.10.020', '', '9', '', 'Optic', 'Optic', 'CA5MZ', 'WOS:0', 1, 0),
(476, '', 'J', 'Borlaf, M;Colomer, MT;Moreno, R;de Andres, A;', 'Borlaf, Mario; Teresa Colomer, Maria; Moreno, Rodrigo; de Andres, Alicia', '', '', '', '', 'Structural and Photoluminescence Study of Eu3+/TiO2 Xerogels as a Function of the Temperature Using Optical Techniques', 'JOURNAL OF THE AMERICAN CERAMIC SOCIETY', '', '', 'English', 'Article', '', '', '', '', '', '', 'Eu3+/TiO2 xerogels have been obtained from colloidal sols by drying at room conditions. Anatase with traces of brookite phases are obtained from the synthesis and the stability of both with temperature is higher (from 400 degrees C up to 800 degrees C) when Eu3+ is present. Raman phonons have been used to detect the different phases and follow the structural transitions. The observed changes with calcination temperature of anatase modes (E-g,E-1,E- B-1g,(1) A(g)/B-1g,B-2,B- and E-g,E-3) are found to be mainly related to the grain size. The anatase grain size increases more and at lower temperatures for undoped than for Eu3+-doped samples favoring the transition to rutile. The stability of the brookite phase is also influenced by the doping being higher in the doped xerogels (700 degrees C) than in the undoped ones (400 degrees C). No concentration quenching of the f-f Eu3+ emission bands is observed up to 3% Eu3+ at low temperatures but the maximum emission is found at lower temperatures for higher Eu3+ content may be due to quenching related to Eu3+ migration. The narrower f-f emission bands of the as-prepared samples are consistent with the presence of Eu3+ ions at the surface with a weak interaction with the TiO2 nanoparticles. A diffusion process of Eu3+ ions occurs during calcination from the surface to different positions of the anatase lattice close to the surface producing an inhomogeneous broadening. Finally, the formation of the pyrochlore phase Eu2Ti2O7 is detected which explains the decrease on the emission efficiency and the increase of the Eu3+ environment symmetry.', '[Borlaf, Mario; Teresa Colomer, Maria; Moreno, Rodrigo] CSIC, Inst Ceram & Vidrio, E-28049 Madrid, Spain; [de Andres, Alicia] CSIC, Inst Ciencia Mat M', 'Borlaf, M (reprint author), Univ Fed Santa Catarina, Lab Mat Vitroceram VITROCER, Campus Univ Trindade, BR-88040900 Florianopolis, SC, Brazil.', 'mborlaf@icv.csic.es', 'Spanish Ministry of Economy and Competitiveness [MAT2012-31090, MAT2012-37276-C03-01]; CSIC [JAE-Pre 083]', 'This study has been supported by the Spanish Ministry of Economy and Competitiveness through projects MAT2012-31090 and MAT2012-37276-C03-01. Dr. M. B', 'Ningthoujam RS, 2009, J ALLOY COMPD, V486, P864, DOI 10.1016/j.jallcom.2009.07.090; Antic Z, 2012, MATER CHEM PHYS, V135, P1064, DOI 10.1016/j.matchem', '40', 0, 0, 'WILEY-BLACKWELL', 'HOBOKEN', '111 RIVER ST, HOBOKEN 07030-5774, NJ USA', '0002-7820', '', 'J AM CERAM', 'J. Am. Cer', 'JAN', '2015', '98', '1', '', '', '', '338', '345', '', '10.1111/jace.13299', '', '8', '', 'Mater', 'Mater', 'AY0QQ', 'WOS:0', 1, 0),
(478, '', 'J', 'Ramos, MA;Perez-Castaneda, TP;Jimenez-Rioboo, RJ;Rodriguez-Tinoco, C;Rodriguez-Viejo, J;', 'Ramos, M. A.; Perez-Castaneda, T. P.; Jimenez-Rioboo, R. J.; Rodriguez-Tinoco, C.; Rodriguez-Viejo, J.', '', '', '', '', 'Do tunneling states and boson peak persist or disappear in extremely stabilized glasses?', 'LOW TEMPERATURE PHYSICS', '', '', 'English', 'Article', '', '', '', '', '', '', 'We review and concurrently discuss two recent works conducted by us, which apparently give opposite results. Specifically, we have investigated how extreme thermal histories in glasses can affect their universal properties at low temperatures, by studying: (i) amber, the fossilized natural resin, which is a glass which has experienced a hyperaging process for about one hundred million years; and (ii) ultrastable thin-film glasses of indomethacin. Specific heat C-p measurements in the temperature range 0.07K < T < 30K showed that the amount of two-level systems, assessed from the linear term at the lowest temperatures, was exactly the same for the pristine hyperaged amber glass as for the subsequently rejuvenated samples, whereas just a modest increase of the boson-peak height (in C-p/T-3) with increasing rejuvenation was observed, related to a corresponding increase of the Debye coefficient. On the other hand, we have observed an unexpected suppression of the twolevel systems in the ultrastable glass of indomethacin, whereas conventionally prepared thin films of the same material exhibit the usual linear term in the specific heat below 1K ascribed to these universal two-level systems in glasses. By comparing both highly-stable kinds of glass, we conclude that the disappearance of the tunneling two-level systems in ultrastable thin films of indomethacin may be due to the quasi-2D and anisotropic behavior of this glass, what could support the idea of a phonon-mediated interaction between two-level systems. (C) 2015 AIP Publishing LLC.', '[Ramos, M. A.] Univ Autonoma Madrid, Lab Bajas Temperaturas, Dept Fis Mat Condensada Condensed Matter Phys Ctr, E-28049 Madrid, Spain; Univ Autonoma M', 'Ramos, MA (reprint author), Univ Autonoma Madrid, Lab Bajas Temperaturas, Dept Fis Mat Condensada Condensed Matter Phys Ctr, E-28049 Madrid, Spain.', 'miguel.ramos@uam.es', 'Spanish MINECO [FIS2011-23488, MAT2012-37276-C03-01, MAT2010-15202]', 'The Laboratorio de Bajas Temperaturas (UAM) is an associated unit with the ICMM-CSIC. This work was financially supported by the Spanish MINECO, under', '', '46', 0, 0, 'AMER INST PHYSICS', 'MELVILLE', '1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA', '1063-777X', '', 'LOW TEMP P', 'Low Temp. ', 'JUN', '2015', '41', '6', '', '', '', '412', '418', '', '10.1063/1.4922089', '', '7', '', 'Physi', 'Physi', 'CM4WF', 'WOS:0', 1, 0),
(479, '', 'J', 'Climent-Pascual, E;Garcia-Velez, M;Alvarez, AL;Coya, C;Munuera, C;Diez-Betriu, X;Garcia-Hernandez, M;de Andres, A;', 'Climent-Pascual, Esteban; Garcia-Velez, Miguel; Luis Alvarez, Angel; Coya, Carmen; Munuera, Carmen; Diez-Betriu, Xavier; Garcia-Hernandez, Mar; de Andres, Alicia', '', '', '', '', 'Large area graphene and graphene oxide patterning and nanographene fabrication by one-step lithography', 'CARBON', '', '', 'English', 'Article', '', '', '', '', '', '', 'A cheap and green technology based on electro-erosion, performed at room conditions and scalable to large area (cm(2)) is demonstrated for structuring graphene and graphene oxide films on any substrate. This one-step technique based on electrical discharges produced by a direct current voltage source competes favorably with laser patterning. The threshold voltage for complete graphene elimination as determined by Raman mapping is around 20 V. At low relative humidity conditions (30%) the transformation to graphene oxide is also detected for operating voltages above 40 V, the oxidation being probably mediated by the residual adsorbed water at the surface. We also show the close correlation of atomic force microscopy (AFM) phase images with the modified graphene characteristics while AFM topographic images are dominated by extrinsic aspects. The use of a spring probe relaxes the requirement of precision for the tip-sample distance and sample flatness to around 10 inn which is very convenient for large scale applications. Furthermore, this technique allows the formation of high quality nanographene, with size around 18 nm, and graphene micro-ribbon lattices in a very fast way and very well defined edges, with dimensions down to 1 mu m width and mm length, very promising for terahertz graphene plasmonic applications. (C) 2015 Elsevier Ltd. All rights reserved.', '[Climent-Pascual, Esteban; Munuera, Carmen; Diez-Betriu, Xavier; Garcia-Hernandez, Mar; de Andres, Alicia] CSIC, Inst Ciencia Mat Madrid, E-28049 Madr', 'Coya, C (reprint author), Univ Rey Juan Carlos, ETSIT, Madrid 28933, Spain.', 'carmen.coya@urjc.es; ada@icmm.csic.es', 'Spanish MINECO [MAT2012-37276-C03-01, MAT2012-37276-C03-03, MAT2011-27470-C02-02]; "Juan de la Cierva" postdoctoral program [JCI-2011-08815]; Comunida', 'X.D. acknowledges a FPI scholarship from Spanish MINECO and C.M. thanks financial support from the "Juan de la Cierva" postdoctoral program JCI-2011-0', 'Arrayas M, 2006, J PHYS D APPL PHYS, V39, P5176, DOI 10.1088/0022-3727/39/24/013; Biro LP, 2012, NANOSCALE, V4, P1824, DOI 10.1039/c1nr11067e; Biro LP', '38', 0, 0, 'PERGAMON-ELSEVIER SCIENCE LTD', 'OXFORD', 'THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND', '0008-6223', '', 'CARBON', 'Carbon', 'AUG', '2015', '90', '', '', '', '', '110', '121', '', '10.1016/j.carbon.2015.04.018', '', '12', '', 'Chemi', 'Chemi', 'CK3PY', 'WOS:0', 1, 1),
(483, '', 'J', 'de Leon, Alberto S.;Rodriguez-Hernandez, Juan;Mazario, Eva;Sanchez-Marcos, Jorge;Menendez, Nieves;Herrasti, Pilar;Munoz-Bonilla, Alexandra;', '', '', '', '', '', 'Design of hybrid gradient porous surfaces with magnetic nanoparticles', 'POLYMER', '', '', '', '', '', '', '', '', '', '', 'This article describes the preparation of hybrid gradient porous surfaces by using the breath figures approach. In a first step gradient porous surfaces were created from polymeric blends consisting of a linear polystyrene as major component and amphiphilic copolymers of poly(styrene-co-acrylic acid) as minor component. THF was used as solvent conducting to porous surfaces with a gradual variation of the pore size in a radial manner due to the long evaporation time. A detailed investigation of the influence of chemical composition of the copolymer (i.e. ratio styrene/acrylic acid) on the porous films was carried out. These films were successfully employed to prepare hybrid gradient surfaces by incorporating of magnetic nanoparticles inside the cavities. For this purpose two different strategies were explored. On one hand a magnetic nanoparticles aqueous suspension was placed on the porous surface with a magnet below the film, and subsequently the colloidal suspension was removed. Alternatively, the magnetic suspension was placed onto the surface and left until complete evaporation. A further step of peeling off the top layer also conducts to the decoration of the nanoparticles exclusively in the interior of the holes. Both strategies allow the preparation of hybrid surfaces with a variation of the content of magnetic nanoparticles magnetic inside the holes as a function of the radial position. (C) 2015 Elsevier Ltd. All rights reserved.', '', '', '', '', '', '', '', 0, 0, '', '', '', '0032-3861', '', '', '', 'JUL 23 2015', '2015', '70', '', '', '', '', '100', '108', '', '10.1016/j.polymer.2015.06.015', '', '', '', '', '', '', 'WOS:0', 0, 0),
(484, '', 'J', 'Olvera, S.;Arce Estrada, E. M.;Sanchez-Marcos, J.;Palomares, F. J.;Vazquez, L.;Herrasti, P.;', '', '', '', '', '', 'Effect of the low magnetic field on the electrodeposition of CoxNi100-x alloys', 'MATERIALS CHARACTERIZATION', '', '', '', '', '', '', '', '', '', '', 'Magnetic, chemical and structural properties of electrosynthesized CoxNi100 - x have been studied. The electrodeposition has been conducted both in the presence and absence of a low magnetic field. The application of a perpendicular magnetic field during the synthesis modified slightly the morphology of the alloys. These changes depend more on the film composition than on the applied field, as demonstrated by AFM images. In the absence of magnetic field, the CoxNi100 - x film grows along the (200) direction. However, when the magnetic field was applied, a preferential orientation along the (111) direction was observed. No important magnetic changes are induced by the presence of the magnetic field during the growth. Based on X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray spectroscopy (EDX) experiments, the chemical composition of the films was preserved during preparation regardless of whether or not magnetic field is applied. There has been observed an increase in deposition rate in the presence of field even at these low magnetic fields. (C) 2015 Elsevier Inc. All rights reserved.', '', '', '', '', '', '', '', 0, 0, '', '', '', '1044-5803', '', '', '', 'JUL 2015', '2015', '105', '', '', '', '', '136', '143', '', '10.1016/j.matchar.2015.05.002', '', '', '', '', '', '', 'WOS:0', 0, 0),
(481, '', 'J', 'Alvarez-Fraga, L;Jimenez-Villacorta, F;Sanchez-Marcos, J;de Andres, A;Prieto, C;', 'Alvarez-Fraga, L.; Jimenez-Villacorta, F.; Sanchez-Marcos, J.; de Andres, A.; Prieto, C.', '', '', '', '', 'Indium-tin oxide thin films deposited at room temperature on glass and PET substrates: Optical and electrical properties variation with the H-2-Ar spu', 'APPLIED SURFACE SCIENCE', '', '', 'English', 'Article', '', '', '', '', '', 'Indium tin oxide (ITO); Magnetron sputtering; Polyethylene terephthalate (PET)', 'The optical and electrical properties of indium tin oxide (ITO) films deposited at room temperature on glass and polyethylene terephthalate (PET) substrates were investigated. A clear evolution of optical transparency and sheet resistance with the content of H-2 in the gas mixture of H-2 and Ar during magnetron sputtering deposition is observed. An optimized performance of the transparent conductive properties ITO films on PET was achieved for samples prepared using H-2/(Ar + H-2) ratio in the range of 0.3-0.6%. Moreover, flexible ITO-PET samples show a better transparent conductive figure of merit, Phi(TC) = T-10/R-S, than their glass counterparts. These results provide valuable insight into the room temperature fabrication and development of transparent conductive ITO-based flexible devices. (C) 2015 Elsevier B.V. All rights reserved.', '[Alvarez-Fraga, L.; Jimenez-Villacorta, F.; Sanchez-Marcos, J.; de Andres, A.; Prieto, C.] Consejo Super Invest Cient ICMM CSIC, Inst Ciencia Mat Madr', 'Prieto, C (reprint author), Consejo Super Invest Cient ICMM CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain.', 'cprieto@icmm.csic.es', 'Spanish MINECO [MAT2012-37276-C03-01]; Madrid Regional Government [P2013/MIT-2740]', 'We acknowledge financial support from Spanish MINECO though contracts MAT2012-37276-C03-01 and from the Madrid Regional Government though contract P20', 'Ahn MH, 2014, VACUUM, V101, P221, DOI 10.1016/j.vacuum.2013.08.018; Benerjee A. N., 2005, PROCESS CRYST GROWTH, V50, P52; Bhaumik S, 2006, J PHYS D AP', '31', 0, 0, 'ELSEVIER SCIENCE BV', 'AMSTERDAM', 'PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS', '0169-4332', '', 'APPL SURF ', 'Appl. Surf', 'JUL 30', '2015', '344', '', '', '', '', '217', '222', '', '10.1016/j.apsusc.2015.03.096', '', '6', '', 'Chemi', 'Chemi', 'CH1SU', 'WOS:0', 1, 0),
(485, '', 'J', 'Mazario, Eva;Sanchez-Marcos, Jorge;Menendez, Nieves;Canete, Magdalena;Mayoral, Alvaro;Rivera-Fernandez, Sara;de la Fuente, Jesus M.;Herrasti, Pilar;', '', '', '', '', '', 'High Specific Absorption Rate and Transverse Relaxivity Effects in Manganese Ferrite Nanoparticles Obtained by an Electrochemical Route', 'JOURNAL OF PHYSICAL CHEMISTRY C', '', '', '', '', '', '', '', '', '', '', 'Superparamagnetic iron oxide-based nanoparticles (SPIONS) have attracted an enormous amount of attention for their potential use in biomedical applications, due to their good biocompatibility and low toxicity. The current study considers citric acid-conjugated manganese ferrite and its synergy to be used in MRI and in hyperthermia treatment, thus showing theragnostic applications. High colloidal stability was obtained with this functionalization. SPIONS with superparamagnetic behavior of crystal sizes of approximately 20 nm were obtained via an electrochemical synthesis method. One of the highest specific absorption rate (SAR) values was achieved in this work (1661 W g(-1)), under a magnetic field of 30 mT at 717 kHz frequency, compared with other magnetic ferrites in the literature. These nanoparticles dissipate heat through Neel relaxation and, together with the high SAR value obtained, indicate an excellent material for hyperthermia treatment of cancer. In addition, these nanoparticles exhibit transverse relaxivity behavior, with an r(2) value of 394 mM(-1) s(-1), i.e., at least two times higher than the value of a commercial magnetic contrast agent based on iron oxides. Finally, no toxicity effects of these nanoparticles are evidenced; as a result, these nanoparticles are appropriate for in vivo application.', '', '', '', '', '', '', '', 0, 0, '', '', '', '1932-7447', '', '', '', 'MAR 26 2015', '2015', '119', '12', '', '', '', '6828', '6834', '', '10.1021/jp510937r', '', '', '', '', '', '', 'WOS:0', 0, 0),
(486, '', 'J', 'Olvera, S.;Sanchez-Marcos, J.;Palomares, F. J.;Salas, E.;Arce, E. M.;Herrasti, P.;', '', '', '', '', '', 'Characterization and corrosion behaviour of CoNi alloys obtained by mechanical alloying', 'MATERIALS CHARACTERIZATION', '', '', '', '', '', '', '', '', '', '', 'CoNi alloys including Co30Ni70, Co50Ni50 and Co70Ni30 were prepared via mechanical alloying using Co and Ni powders. The crystallinity and short-range order were studied using X-ray diffraction and X-ray absorption spectroscopy. The results show that the milling process increases the number of vacancies, especially around the Co atoms, while the milling time decreases the crystalline size and enhances the crystallinity. X-ray photoelectron spectroscopy was used to characterise the chemical composition of the samples surface. The magnetic properties were analysed using zero-field cooling, field cooling and a magnetic hysteresis loops. The magnetic saturation moment is approximately 1.05 mu(B)/atom; this value decreases with the mechanical alloying time, and it is proportional to the cobalt concentration. The polarization and impedance curves in different media (NaCl, H2SO4 and NaOH) showed similar corrosion resistance values. The corrosion resistance increased in the order NaCl, H2SO4 and NaOH. A good passivation layer was formed in NaOH due to the cobalt and nickel oxides on the particle surfaces. (C) 2014 Elsevier Inc. All rights reserved.', '', '', '', '', '', '', '', 2, 2, '', '', '', '1044-5803', '', '', '', 'JUL 2014', '2014', '93', '', '', '', '', '79', '86', '', '10.1016/j.matchar.2014.03.022', '', '', '', '', '', '', 'WOS:0', 0, 0),
(487, '', 'J', 'Jimenez-Villacorta, F; Climent-Pascual, E; Ramirez-Jimenez, R; Sanchez-Marcos, J; Prieto, C; de Andres, A;', 'Jimenez-Villacorta, F; Climent-Pascual, E; Ramirez-Jimenez, R; Sanchez-Marcos, J; Prieto, C; de Andres, A;', '', '', '', '', 'Graphene - ultrasmall silver nanoparticle interactions and their effect on electronic transport and Raman enhancement', 'Carbon', '', '', '', '', '', '', '', '', '', '', 'The modulation of electrical and Raman properties of ultrafine (~4 nm) Ag nanoparticle/graphene/SiO2 hybrid material at low coverage is evaluated with gradual nanoparticle incorporation by the gas aggregation deposition technique.  The different contributing factors, such as doping, impurity scattering or strain, are assessed.  Incorporation of Ag nanoparticles produce a very efficient n-type doping of graphene (~7.5 e- per particle) maintaining a constant mobility for particle coverage below ~0.3 monolayers.  Doping efficiency is determined by the probability for nanoparticles to be deposited in contact with graphene.  The Fermi level upshift is modeled within the charged impurity scattering mechanism in the whole coverage range.  A crossover to the regime where impurity scattering dominates is evidenced at large particle concentration.  Surface-enhanced Raman scattering is detected in graphene phonons in the limit of vanishing plasmon resonance and very low coverage (~0.08) that correspond to ~1500 nanoparticles at the laser spot.  Small distortions of the graphene lattice (~0.012 %) induced by the nanoparticles overcome the predicted changes in Raman phonons related to carrier doping and originate I2D/IG damping.  This evolution of physical properties with gradual incorporation of Ag nanoparticles is anticipated to provide valuable hints to tune the optical and electronic performance of these graphene-based hybrid systems.\r\n\r\n	', '', '', '', '', '', '', '', 0, 0, '', '', '', '', '', '', '', '', '2016', '101', '', '', '', '', '305', '314', '', '10.1016/j.carbon.2016.02.006', '', '', '', 'D1', '', '', '', 1, 0),
(488, '', 'J', 'Gonzalez, AG.; Jimenez-Villacorta, F; Beike, AK.; Reski, R.; Adamo, P.; Pokrovsky,OS.', 'Gonzalez, AG.; Jimenez-Villacorta, F; Beike, AK.; Reski, R.; Adamo, P.; Pokrovsky,OS.', '', '', '', '', 'Chemical and Structural Characterization of Copper Adsorbed on Mosses (Bryophita)', 'Journal of Hazardous Materials', '', '', '', '', '', '', '', '', '', '', 'The adsorption of copper on passive biomonitors (devitalized mosses Hypnum sp., Sphagnum denticulatum, Pseudoscleropodium purum and Brachythecium rutabulum) was studied under different experimental conditions such as a function of pH and Cu concentration in solution. Cu assimilation by living Physcomitrella patents was also investigated. Molecular structure of surface adsorbed and incorporated Cu was studied by X-ray Absorption Spectroscopy (XAS). Devitalized mosses exhibited the universal adsorption pattern of Cu as a function of pH, with a total binding sites number 0.05-0.06 mmolgdry−1 and a maximal adsorption capacity of 0.93–1.25 mmolgdry−1 for these devitalized species. The Extended X-ray Absorption Fine Structure (EXAFS) fit of the first neighbor demonstrated that for all studied mosses there are ∼4.5 O/N atoms around Cu at ∼1.95 Å likely in a pseudo-square geometry. The X-ray Absorption Near Edge Structure (XANES) analysis demonstrated that Cu(II)-cellulose (representing carboxylate groups) and Cu(II)-phosphate are the main moss surface binding moieties, and the percentage of these sites varies as a function of solution pH. P. patens exposed during one month to Cu2+ yielded ∼20% of Cu(I) in the form of Cu-S(CN) complexes, suggesting metabolically-controlled reduction of adsorbed and assimilated Cu2+.\r\n\r\n	', '', '', '', '', '', '', '', 0, 0, '', '', '', '', '', '', '', '', '2016', '308', '', '', '', '', '343', '354', '', '', '', '', '', 'Q1', '', '', '', 1, 0),
(490, '', 'J', 'Castellano-Hernandez, E;Serrano, MD;Rioboo, RJJ;Cascales, C;Zaldo, C;Jezowski, A;Loiko, PA;', 'Castellano-Hernandez, Elena; Dolores Serrano, Maria; Jimenez Rioboo, Rafael J.; Cascales, Concepcion; Zaldo, Carlos; Jezowski, Andrzej; Loiko, Pavel A.', '', '', '', '', 'Na Modification of Lanthanide Doped Ca3Nb1.5Ga3.5O12-Type Laser Garnets: Czochralski Crystal Growth and Characterization', 'CRYSTAL GROWTH & DESIGN', '', '', 'English', 'Article', '', '', '', '', '', '', 'The Na+-Yb+ (or Er3+) co-substitution of Ca2+ in Ca(3)Nb(1.)5Ga(3.5)O(12) (CNGG) laser crystal is studied. In contrast to other garnets whose structural disorder is exclusively based on the presence of differently sized cations on the same crystal sites, Na+ incorporated in the dodecahedral site (a site also shared by Ca2+ and trivalent lanthanides) creates diverse electric charge distributions over the dodecahedral sublattice, which adds to the disorder associated with Nb5+ and Ga3+ simultaneous occupation of the octahedral and tetrahedral sites. The currently determined cationic compositions of Czochralski grown congruent CNGG and Na-modified CNGG crystals show that Na+ incorporation reduces the cationic vacancy concentration on dodecahedral and octahedral sites but does not affect that in tetrahedral sites. Physical properties of interest for laser design (optical transmission, elastic constants, hardness, specific heat, thermal conductivity, thermal expansion, refractive index dispersion, group velocity dispersion, and thermo optic coefficients) have been systematically determined at cryogenic temperatures and above room temperature. Na+ incorporation into CNGG decreases the crystal growth temperature, promotes Yb3+ doping, and importantly, increases the Yb3+ optical bandwidth, offering good prospects for the implementation of ultrashort pulses in mode-locked laser oscillators.', '[Castellano-Hernandez, Elena; Dolores Serrano, Maria; Jimenez Rioboo, Rafael J.; Cascales, Concepcion; Zaldo, Carlos] CSIC, Inst Ciencia Mat Madrid, C', 'Serrano, MD (reprint author), CSIC, Inst Ciencia Mat Madrid, C Sor Juana Ines de la Cruz 3, E-28049 Madrid, Spain.', 'dolores.serrano@icmsn.csic.es', 'Spanish Ministry of Economy and Competitiveness; European Regional Development Fund [MAT2014-56607-R, RTC-2015-3631-5];  [BES-2012-060296]', 'This work was supported by the Spanish Ministry of Economy and Competitiveness and by the European Regional Development Fund through MAT2014-56607-R a', '', '45', 0, 0, 'AMER CHEMICAL SOC', 'WASHINGTON', '1155 16TH ST, NW, WASHINGTON, DC 20036 USA', '1528-7483', '', 'CRYST GROW', 'Cryst. Gro', 'MAR', '2016', '16', '3', '', '', '', '1480', '1491', '', '10.1021/acs.cgd.5b01607', '', '12', '', 'Chemi', 'Chemi', 'DF6GM', 'WOS:0', 1, 0),
(489, '', 'J', 'Anemone, G; Climent-Pascual, E; Yu, H. K.; Al Taleb,A ; Jimenez-Villacorta, F;  Prieto, C; Wodtke, A. M.; De Andres, A; Farias, D', 'Anemone, G; Climent-Pascual, E; Yu, H. K.; Al Taleb,A ; Jimenez-Villacorta, F;  Prieto, C; Wodtke, A. M.; De Andres, A; Farias, D', '', '', '', '', 'Quality of Graphene on Sapphire: Long-range Order from Helium Diffraction versus Lattice Defects from Raman Spectroscopy', 'RSC Advances', '', '', '', '', '', '', '', '', '', '', 'We report a new method to produce high-quality, transparent graphene/sapphire samples, using Cu as a catalyst. The starting point is a high-quality graphene layer prepared by CVD on Cu(111)/Al2O3. Graphene on sapphire is obtained in situ by evaporation of the Cu film in UHV. He-diffraction, atomic force microscopy (AFM), Raman spectroscopy and optical transmission have been used to assess the quality of graphene in a metal free area. We used helium atom scattering as a sensitive probe of the crystallinity of the graphene on sapphire. The observation of high reflectivity and clear diffraction peaks demonstrates the presence of flat and homogeneous graphene domains over lateral scales of microns, consistent with the AFM results. Surprisingly, putting graphene on sapphire improves the quality of the He-diffraction spectra. Graphene forms a moiré pattern with a (11 × 11) periodicity, aligned with the (1 × 1) sapphire unit cell. The lattice constant of graphene on sapphire is a = (2.44 ± 0.02) Å. The phonon dispersion of the graphene flexural mode has been measured. This allowed the determination of the bending rigidity k = 0.61 ± 0.15 eV, and the graphene–sapphire coupling strength g = (5.8 ± 0.4) × 1019 N m−3. The uniformity of the graphene has also been investigated by Raman mapping. Judging by the ratio of the 2D to G peaks, the quality of the graphene is not degraded by Cu removal. The high transparency (80%) measured in the visible range makes this system suitable for many applications that require hybrid properties commonly associated with metals (conductivity) and insulators (transparency). Our study shows that He-diffraction and Raman provide crucial information on quite different, complementary aspects of the same samples.\r\n	\r\n\r\n	\r\n\r\n	\r\n\r\n	', '', '', '', '', '', '', '', 0, 0, '', '', '', '', '', '', '', '', '2016', '6', '', '', '', '', '21235', '', '', '10.1039/C5RA27452D', '', '', '', '', '', '', '', 1, 0),
(491, '', 'J', 'R. Ramírez-Jíménez; L. Álvarez-Fraga; F. Jimenez-Villacorta; E. Climent-Pascual; C. Prieto; A. de Andrés', 'R. Ramírez-Jíménez, L. Álvarez-Fraga, F. Jimenez-Villacorta, E. Climent-Pascual, C. Prieto and A. de Andrés', '', '', '', '', 'Interference Enhanced Raman Effect in graphene bubbles', 'Carbon', '', '', '', '', '', '', '', '', '', '', 'Stable Graphene/gas/Cu bubbles are formed by the spontaneous oxidation at room conditions of the Cu substrates used as the catalyst agent in chemical vapor deposition growth of graphene. The non homogeneous copper oxidation produces discontinuous Cu2O films where atmospheric molecules get trapped by the impermeable graphene layer forming bubbles. Raman Interference effects are calculated both for graphene and Cu2O phonons in graphene/Cu2O/Cu system using the transfer matrix method finding that Cu2O thickness is limited to 20 nm and maximum Raman enhancement of graphene is 10. Nevertheless, enhancement values up to 60 are detected for micrometric graphene bubbles on copper which, according to the simulations, are 70 nm height. AFM measurements confirm the bubble dimensions and show that they are mechanically softer than graphene on copper. Consistently, the Raman characteristics of the graphene bubbles coincide with free standing undoped graphene with small strain, in the range 0–0.3%, while graphene on Cu2O presents hole doping and larger strain fields. The simulations indicate that interference Raman enhancement can reach values >104 in graphene/dielectric/Aluminum trilayers (dielectric = gas, oxide or polymer). These systems are therefore interesting platforms for optical sensing where graphene is the adequate bio-compatible layer for metallic nanoparticles and molecules deposition.\r\n\r\n	', '', '', '', '', '', '', '', 0, 0, '', '', '', '', '', '', '', '2016', '2016', '105', '', '', '', '', '556', '565', '', '10.1016/j.carbon.2016.04.076', '', '', '', '', '', '', '', 1, 1),
(492, '', 'J', 'Perez-Castaneda, T;Jimenez-Rioboo, RJ;Ramos, MA;', 'Perez-Castaneda, T.; Jimenez-Rioboo, R. J.; Ramos, M. A.', '', '', '', '', 'Do two-level systems and boson peak persist or vanish in hyperaged geological glasses of amber?', 'PHILOSOPHICAL MAGAZINE', '', '', '', '', '', '', '', '', '', '', 'In this work, we extend, review and jointly discuss earlier experiments conducted by us in hyperaged geological glasses, either in Dominican amber (20 million years old) or in Spanish amber from El Soplao (110 million years old). After characterization of their thermodynamic and elastic properties (using Differential Scanning Calorimetry around the glass-transition temperature, and measuring mass density and sound velocity), their specific heat was measured at low and very low temperatures. By directly comparing pristine amber samples (i.e. highly stabilized polymer glasses after ageing for millions of years) to the same samples after being totally or partially rejuvenated, we have found that the two most prominent universal "anomalous" low-temperature properties of glasses, namely the tunnelling two-level systems and the so-called "boson peak", persist essentially unchanged in both types of hyperaged geological glasses. Therefore, non-Debye low-energy excitations of glasses appear to be robust, intrinsic properties of non-crystalline solids which do not vanish by accessing to very deep states in the potential energy landscape.', '', '', '', '', '', '', '', 0, 0, '', '', '', '1478-6435', '', '', '', 'MAR 23', '2016', '96', '7-9', 'SI', '', '', '774', '787', '', '10.1080/14786435.2015.1111530', '', '', '', '', '', '', 'WOS:0', 1, 0),
(493, '', 'J', 'Rioboo, RJJ;Sanchez-Sanchez, A;Prieto, C;', 'Jimenez Rioboo, Rafael J.; Sanchez-Sanchez, Alberto; Prieto, Carlos', '', '', '', '', 'Optical find of hypersonic surface acoustic waves in bulk transparent materials', 'PHYSICAL REVIEW B', '', '', 'English', 'Article', '', '', '', '', '', '', 'It is shown that direct information from surface acoustic waves (SAWs) of bulk transparent materials can be obtained by using Brillouin light scattering (BLS). The study of surface phonons by means of an optical spectroscopy such as BLS has been historically constrained to nontransparent and highly reflecting bulk and film samples or even to very thin films deposited on reflecting substrates. Probably due to its low signal and to the narrow window in experimental conditions, it was assumed for years that bulk transparent samples were not suited for Brillouin spectroscopy in order to get information on SAWs, negating this optical technique in the search for SAW properties. The reported experiments on transparent glasses and single crystals (cubic MgO and trigonal sapphire) prove that there is no intrinsic physical reason not to collect SAW propagation velocity data from transparent bulk samples and opens a challenge to apply the Brillouin spectroscopy in a wider scenario to obtain direct information, in a nondestructive and contactless way, about SAWs in bulk materials.', '[Jimenez Rioboo, Rafael J.; Sanchez-Sanchez, Alberto; Prieto, Carlos] CSIC, Inst Ciencia Mat Madrid, C Sor Juana Ines de la Cruz 3, E-28049 Madrid, Sp', 'Rioboo, RJJ (reprint author), CSIC, Inst Ciencia Mat Madrid, C Sor Juana Ines de la Cruz 3, E-28049 Madrid, Spain.', 'rjimenez@icmm.csic.es', 'Spanish MINECO [MAT2012-37276- C03-01]; Comunidad de Madrid Project [S2013/MIT-2740 (PHAMA_2.0-CM)]; European Union Seventh Framework Program [604391]', 'The authors wish to thank Prof. Victor R. Velasco for encouraging discussions about the character of the detected surface acoustic waves which opened ', '', '29', 0, 0, 'AMER PHYSICAL SOC', 'COLLEGE PK', 'ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA', '2469-9950', '', 'PHYS REV B', 'Phys. Rev.', 'JUL 29', '2016', '94', '1', '', '', '', '', '', '014313', '10.1103/PhysRevB.94.014313', '', '8', '', 'Physi', 'Physi', 'DT4VC', 'WOS:0', 1, 0),
(494, '', 'J', 'Rioboo, RJJ;Cusco, R;Prieto, C;Kopittke, C;Novikov, SV;Artus, L;', 'Jimenez Rioboo, Rafael J.; Cusco, Ramon; Prieto, Carlos; Kopittke, Caroline; Novikov, Sergei V.; Artus, Luis', '', '', '', '', 'Surface acoustic wave velocity and elastic constants of cubic GaN', 'APPLIED PHYSICS EXPRESS', '', '', 'English', 'Article', '', '', '', '', '', '', 'We present high-resolution surface Brillouin scattering measurements on cubic GaN layers grown on GaAs substrate. By using a suitable scattering geometry, scattering by surface acoustic waves is recorded for different azimuthal angles, and the surface acoustic wave velocities are determined. A comparison of experimental results with numerical simulations of the azimuthal dependence of the surface wave velocity shows good agreement and allows a consistent set of elastic constants for c-GaN to be determined. (C) 2016 The Japan Society of Applied Physics', '[Jimenez Rioboo, Rafael J.; Prieto, Carlos; Kopittke, Caroline] CSIC, Inst Ciencia Mat Madrid, Sor Juana Ines de la Cruz 3, E-28049 Madrid, Spain; [Cu', 'Rioboo, RJJ (reprint author), CSIC, Inst Ciencia Mat Madrid, Sor Juana Ines de la Cruz 3, E-28049 Madrid, Spain.', '', 'Spanish MINECO [MAT2012-37276-C03-01, MAT2015-71035-R]; Comunidad de Madrid [S2013/MIT-2740 (PHAMA_2.0-CM)]; DAAD and its RISE program', 'This work was partially supported by the Spanish MINECO under projects MAT2012-37276-C03-01 and MAT2015-71035-R, and from Comunidad de Madrid project ', '', '33', 0, 0, 'IOP PUBLISHING LTD', 'BRISTOL', 'TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND', '1882-0778', '', 'APPL PHYS ', 'Appl. Phys', 'JUN', '2016', '9', '6', '', '', '', '', '', '061001', '10.7567/APEX.9.061001', '', '4', '', 'Physi', 'Physi', 'DO5AK', 'WOS:0', 1, 0),
(495, '', 'J', 'Perez-Mezcua, D;Bretos, I;Jimenez, R;Ricote, J;Jimenez-Rioboo, RJ;da Silva, CG;Chateigner, D;Fuentes-Cobas, L;Sirera, R;Calzada, ML;', 'Perez-Mezcua, Dulce; Bretos, Inigo; Jimenez, Ricardo; Ricote, Jess; Jimenez-Rioboo, Rafael J.; da Silva, Cosmelina Goncalves; Chateigner, Daniel; Fuentes-Cobas, Luis; Sirera, Rafael; Lourdes Calzada, M.', '', '', '', '', 'Photochemical solution processing of films of metastable phases for flexible devices: the beta-Bi2O3 polymorph', 'SCIENTIFIC REPORTS', '', '', '', '', '', '', '', '', '', '', 'The potential of UV-light for the photochemical synthesis and stabilization of non-equilibrium crystalline phases in thin films is demonstrated for the beta-Bi2O3 polymorph. The pure beta-Bi2O3 phase is thermodynamically stable at high temperature (450-667 degrees C), which limits its applications in devices. Here, a tailored UV-absorbing bismuth(III)-N-methyldiethanolamine complex is selected as an ideal precursor for this phase, in order to induce under UV-light the formation of a -Bi-O-Bi- continuous network in the deposited layers and the further conversion into the beta-Bi2O3 polymorph at a temperature as low as 250 degrees C. The stabilization of the beta-Bi2O3 films is confirmed by their conductivity behavior and a thorough characterization of their crystal structure. This is also supported by their remarkable photocatalytic activity. Besides, this processing method has allowed us for the first time the preparation of beta-Bi2O3 films on flexible plastic substrates, which opens new opportunities for using these materials in potential applications not available until now (e.g., flexible photocatalytic reactors, self-cleaning surfaces or wearable antimicrobial fabrics). Therefore, photochemical solution deposition (PCSD) demonstrates to be not only an efficient approach for the low temperature processing of oxide films, but also an excellent alternative for the stabilization of metastable phases.', '', '', '', '', '', '', '', 0, 0, '', '', '', '2045-2322', '', '', '', 'DEC 20', '2016', '6', '', '', '', '', '', '', '39561', '10.1038/srep39561', '', '', '', '', '', '', 'WOS:0', 1, 0),
(496, '', 'J', 'Alvarez-Fraga, L;Climent-Pascual, E;Aguilar-Pujol, M;Ramirez-Jimenez, R;Jimenez-Villacorta, F;Prieto, C;de Andres, A;', 'Alvarez-Fraga, Leo; Climent-Pascual, Esteban; Aguilar-Pujol, Montserrat; Ramirez-Jimenez, Rafael; Jimenez-Villacorta, Felix; Prieto, Carlos; de Andres, Alicia', '', '', '', '', 'Efficient Heterostructures for Combined Interference and Plasmon Resonance Raman Amplification', 'ACS APPLIED MATERIALS & INTERFACES', '', '', 'English', 'Article', '', '', '', '', '', 'Raman enhancement; SERS; IERS; interference; sensing; imaging; graphene; nanoparticles', 'The detection, identification, and quantification of different types of molecules and the optical imaging of, for example, cellular processes are important challenges. Here, we present how interference-enhanced Raman scattering (IERS) in adequately designed heterostructures can provide amplification factors relevant for both detection and imaging. Calculations demonstrate that the key factor is maximizing the absolute value of the refractive indices'' difference between dielectric and metal layers. Accordingly, Si/Al/Al2O3/graphene heterostructures have been fabricated by optimizing the thickness and roughness and reaching enhancement values up to 700 for 488 nm excitation. The deviation from the calculated enhancement, 1200, is mainly due to reflectivity losses and roughness of the Al layer. The IERS platforms are also demonstrated to improve significantly the quality of white light images of graphene and are foreseen to be adequate to reveal the morphology of 2D and biological materials. A graphene top layer is adequate for most organic molecule deposition and often quenches possible fluorescence, permitting Raman signal detection, which, for a rhodamine 6G (R6G) monolayer, presents a gain of 400. Without graphene, the nonquenched R6G fluorescence is similarly amplified. The wavelength dependence of the involved refractive indices predicts much higher amplification (around 10(4)) for NIR excitation. These interference platforms can therefore be used to gain contrast and intensity in white light, Raman, and fluorescence imaging. We also demonstrate that surface-enhanced Raman scattering and IERS amplifications can be efficiently combined, leading to a gain of >10(5) (at 488 nm) by depositing a Ag nanostructured transparent film on the IERS platform. When the plasmonic structures deposited on the IERS platforms are optimized, single molecule detection can be actively envisaged.', '[Alvarez-Fraga, Leo; Climent-Pascual, Esteban; Aguilar-Pujol, Montserrat; Jimenez-Villacorta, Felix; Prieto, Carlos; de Andres, Alicia] CSIC, Inst Cie', 'de Andres, A (reprint author), CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain.', 'ada@icmm.csic.es', 'Spanish Ministerio de Economia y Competitividad (MINECO) [BES-2013-062759]; MINECO [MAT2012-37276-C03-01, MAT2015-65356-C3-1-R]; Comunidad de Madrid [', 'LA-F. acknowledges a FPI grant (BES-2013-062759) from Spanish Ministerio de Economia y Competitividad (MINECO). The research leading to these results ', 'Abidi IH, 2016, RSC ADV, V6, P7093, DOI 10.1039/c5ra24842f; Blake P, 2007, APPL PHYS LETT, V91, DOI 10.1063/1.2768624; CONNELL GAN, 1980, APPL PHYS LE', '31', 0, 0, 'AMER CHEMICAL SOC', 'WASHINGTON', '1155 16TH ST, NW, WASHINGTON, DC 20036 USA', '1944-8244', '', 'ACS APPL M', 'ACS Appl. ', 'FEB 1', '2017', '9', '4', '', '', '', '4119', '4125', '', '10.1021/acsami.6b12490', '', '7', '', 'Nanos', 'Scien', 'EJ6UW', 'WOS:0', 1, 0),
(497, '', 'J', 'Jimenez-Villacorta, F;Climent-Pascual, E;Ramirez-Jimenez, R;Sanchez-Marcos, J;Prieto, C;de Andres, A;', 'Jimenez-Villacorta, F.; Climent-Pascual, E.; Ramirez-Jimenez, R.; Sanchez-Marcos, J.; Prieto, C.; de Andres, A.', '', '', '', '', 'Graphene-ultrasmall silver nanoparticle interactions and their effect on electronic transport and Raman enhancement', 'CARBON', '', '', 'English', 'Article', '', '', '', '', '', '', 'The modulation of electrical and Raman properties of ultrafine (similar to 4 nm) Ag nanoparticle/graphene/SiO2 hybrid material at low coverage is evaluated with gradual nanoparticle incorporation by the gas aggregation deposition technique. The different contributing factors, such as doping, impurity scattering or strain, are assessed. Incorporation of Ag nanoparticles produce a very efficient n-type doping of graphene (similar to 7.5 e(-) per particle) maintaining a constant mobility for particle coverage below similar to 0.3 monolayers. Doping efficiency is determined by the probability for nanoparticles to be deposited in contact with graphene. The Fermi level upshift is modeled within the charged impurity scattering mechanism in the whole coverage range. A crossover to the regime where impurity scattering dominates is evidenced at large particle concentration. Surface-enhanced Raman scattering is detected in graphene phonons in the limit of vanishing plasmon resonance and very low coverage (similar to 0.08) that correspond to similar to 1500 nanoparticles at the laser spot. Small distortions of the graphene lattice (+/- 0.012%) induced by the nanoparticles overcome the predicted changes in Raman phonons related to carrier doping and originate I-2D/I-G damping. This evolution of physical properties with gradual incorporation of Ag nanoparticles is anticipated to provide valuable hints to tune the optical and electronic performance of these graphene-based hybrid systems. (C) 2016 Elsevier Ltd. All rights reserved.', '[Jimenez-Villacorta, F.; Climent-Pascual, E.; Prieto, C.; de Andres, A.] CSIC, Inst Ciencia Mat Madrid, Madrid 28049, Spain; [Ramirez-Jimenez, R.] Uni', 'Jimenez-Villacorta, F (reprint author), CSIC, Inst Ciencia Mat Madrid, Madrid 28049, Spain.', 'fjv2003@gmail.com', 'MINECO [MAT2012-37276-C03-01]; Comunidad de Madrid [S2013/MIT-2740 (PHAMA_2.0-CM)]', 'This work is supported by MINECO (MAT2012-37276-C03-01) and from Comunidad de Madrid, project S2013/MIT-2740 (PHAMA_2.0-CM).', 'Adam S, 2008, SOLID STATE COMMUN, V146, P356, DOI 10.1016/j.ssc.2008.03.021; Adam S, 2007, P NATL ACAD SCI USA, V104, P18392, DOI 10.1073/pnas.0704772', '67', 4, 4, 'PERGAMON-ELSEVIER SCIENCE LTD', 'OXFORD', 'THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND', '0008-6223', '', 'CARBON', 'Carbon', 'MAY', '2016', '101', '', '', '', '', '305', '314', '', '10.1016/j.carbon.2016.02.006', '', '10', '', 'Chemi', 'Chemi', 'DE7KT', 'WOS:0', 1, 0),
(498, '', 'J', 'Gonzalez-Jimenez, IN;Climent, E;Torres-Pardo, A;Hernando, M;Sanchez-Pelaez, AE;Fernandez-Martinez, F;Diaz, MTF;Gonzalez-Calbet, JM;de Andres, A;Varela, A;Parras, M;', 'Gonzalez-Jimenez, Irma N.; Climent, Esteban; Torres-Pardo, Almudena; Hernando, Maria; Sanchez-Pelaez, Ana E.; Fernandez-Martinez, Francisco; Fernandez Diaz, M. Teresa; Gonzalez-Calbet, Jose M.; de Andres, Alicia; Varela, Aurea; Parras, Marina', '', '', '', '', 'SrMnO3 Thermochromic Behavior Governed by Size-Dependent Structural Distortions', 'INORGANIC CHEMISTRY', '', '', 'English', 'Article', '', '', '', '', '', '', 'The influence of particle size in both the structure and thermochromic behavior of 4H-SrMnO3 related perovskite is described. Microsized SrMnO3 suffers a structural transition from hexagonal (P6(3)/mmc) to orthorhombic (C222(1)) symmetry at temperature close to 340 K. The orthorhombic distortion is due to the tilting of the corner-sharing Mn2O9 units building the 4H structural type. When temperature decreases, the distortion becomes sharper reaching its maximal degree at similar to 125 K. These structural changes promote the modification of the electronic structure of orthorhombic SrMnO3 phase originating the observed color change. nano-SrMnO3 adopts the ideal 4H hexagonal structure at room temperature, the orthorhombic distortion being only detected at temperature below 170 K. A decrease in the orthorhombic distortion degree, compared to that observed in the microsample, may be the reason why a color change is not observed at low temperature (77 K).', '[Gonzalez-Jimenez, Irma N.; Torres-Pardo, Almudena; Hernando, Maria; Sanchez-Pelaez, Ana E.; Gonzalez-Calbet, Jose M.; Varela, Aurea; Parras, Marina] ', 'Parras, M (reprint author), Univ Complutense Madrid, Fac CC Quim, Dept Quim Inorgan, E-28040 Madrid, Spain.; de Andres, A (reprint author), CSIC, Inst', 'ada@icmm.csic.es; mparras@ucm.es', ' [MAT2014-54372-R];  [CSD2009-00013];  [MAT2015-65356-C3-1];  [S2013/MIT-2740];  [PHAMA2.0-CM]', 'Financial support through research Project Nos. MAT2014-54372-R, CSD2009-00013 and MAT2015-65356-C3-1, S2013/MIT-2740, PHAMA2.0-CM is acknowledged. We', 'Adkin JJ, 2006, J SOLID STATE CHEM, V179, P70, DOI 10.1016/j.jssc.2005.09.046; Alvarez G, 2008, J MAGN MAGN MATER, V320, pE117, DOI 10.1016/j.jmmm.200', '27', 1, 1, 'AMER CHEMICAL SOC', 'WASHINGTON', '1155 16TH ST, NW, WASHINGTON, DC 20036 USA', '0020-1669', '', 'INORG CHEM', 'Inorg. Che', 'APR 18', '2016', '55', '8', '', '', '', '3980', '3991', '', '10.1021/acs.inorgchem.6b00193', '', '12', '', 'Chemi', 'Chemi', 'DJ9BI', 'WOS:0', 1, 0),
(499, '', 'J', 'Climent-Pascual, E;Hames, BC;Moreno-Ramirez, JS;Alvarez, AL;Juarez-Perez, EJ;Mas-Marza, E;Mora-Sero, I;de Andres, A;Coya, C;', 'Climent-Pascual, Esteban; Clasen Hames, Bruno; Moreno-Ramirez, Jorge S.; Luis Alvarez, Angel; Juarez-Perez, Emilio J.; Mas-Marza, Elena; Mora-Sero, Ivan; de Andres, Alicia; Coya, Carmen', '', '', '', '', 'Influence of the substrate on the bulk properties of hybrid lead halide perovskite films', 'JOURNAL OF MATERIALS CHEMISTRY A', '', '', 'English', 'Article', '', '', '', '', '', '', 'In addition to the known effect of the substrate on the interfacial properties of perovskite films, here we show that the bulk properties of hybrid lead halide perovskite films depend on the type of substrate used for film growth. Despite the relative large film thickness, similar to 600 nm, the roughness and nature of the substrate layer (glass, FTO, TiO2 and PEDOT:PSS) affect not just the degree of preferential orientation and crystal grain size but also the lattice parameters of CH3NH3PbI3 films synthesized from the PbCl2 precursor. The obtained changes in lattice parameters indicate that the Pb-Pb distance varies by around 0.7%. We suggest that the substrate roughness and chemical nature determine the concentration of defects mainly by varying the chlorine content and probably by the incorporation of oxygen and iodine vacancies during film nucleation and growth. These differences also have consequences in the observed light induced transformations. Upon laser illumination, the formation of additional defects, most probably related to oxygen, is revealed by 110 and 165 cm(-1) Raman peaks. With increasing laser power the chemical transformation into PbOx is clearly identified by the 140 and 275 cm(-1) Raman peaks. The irreversible photoluminescence enhancement observed at low power with illumination time, also dependent on the substrate nature, is proposed to be due to the localization of the electron-hole excitons created in the vicinity of the light generated defects. These results shed light on the performance of the perovskite layer and help to understand how bulk processes, where ion migration is a conspicuous example, are severely affected by interfacial properties such as those imposed by the substrate.', '[Climent-Pascual, Esteban; de Andres, Alicia] CSIC, ICMM, Madrid 28049, Spain; [Clasen Hames, Bruno; Mas-Marza, Elena; Mora-Sero, Ivan] Univ Jaume 1, ', 'de Andres, A (reprint author), CSIC, ICMM, Madrid 28049, Spain.; Mora-Sero, I (reprint author), Univ Jaume 1, Inst Adv Mat INAM, Castellon de La Plana', 'ada@icmm.csic.es', 'Spanish Ministerio de Economia y Competitividad (MINECO) [MAT2015-65356-C3-1-R, 2-R, MAT2014-54852-R, MAT2015-70611-ERC]; Comunidad de Madrid Excellen', 'Funding by the Spanish Ministerio de Economia y Competitividad (MINECO) under Projects MAT2015-65356-C3-1-R and 2-R, MAT2014-54852-R and MAT2015-70611', 'ALBRECHT MG, 1977, J PHYS CHEM SOLIDS, V38, P297, DOI 10.1016/0022-3697(77)90106-8; Almora O, 2016, ACS ENERGY LETT, V1, P209, DOI 10.1021/acsenergyle', '61', 0, 0, 'ROYAL SOC CHEMISTRY', 'CAMBRIDGE', 'THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND', '2050-7488', '', 'J MATER CH', 'J. Mater. ', '', '2016', '4', '46', '', '', '', '18153', '18163', '', '10.1039/c6ta08695k', '', '11', '', 'Chemi', 'Chemi', 'ED0AM', 'WOS:0', 1, 0),
(501, '', 'J', 'Munoz, F;Saitoh, A;Jimenez-Rioboo, RJ;Balda, R;', 'Munoz, Francisco; Saitoh, Akira; Jimenez-Rioboo, Rafael J.; Balda, Rolindes', '', '', '', '', 'Synthesis and properties of Nd-doped oxynitride phosphate laser glasses', 'JOURNAL OF NON-CRYSTALLINE SOLIDS', '', '', 'English', 'Article', '', '', '', '', '', 'Phosphate glasses; Laser glasses; Oxynitride glasses; Nitridation; Neodymium', 'The substitution of nitrogen for oxygen in phosphate glasses improves the chemical, thermal and mechanical properties and particularly reduces their very high hygroscopic character, although the preparation of homogeneous and free of defects oxynitride bulk phosphate glasses through ammonolysis represents a big challenge. This work reports on the synthesis and properties of a series of Nd-doped oxynitride phosphate glasses with composition Na0.3K0.3Ba0.2PO3-3/2Nx that may find application as laser hosts. Whereas the glass transition temperature, elastic modulus and index of refraction show a regular increase with the nitrogen content that agrees with previous studies, the effect of nitrogen onto the luminescence of Nd3+ ions appears to be more complicated. The average lifetime of the decay from the F-4(3/2) level decreases with the N/P ratio of the glasses, which is thought to be mainly due to the presence of water from the ammonolysis reaction. However, further thermal treatments under N-2 flow of an oxynitride glass have shown an important reduction of the water content as well as a drastic increase of the luminescence lifetime of Nd3+, this being a promising method for the development of laser phosphate glasses having good chemical and mechanical properties.', '[Munoz, Francisco] CSIC, Inst Ceram & Glass, Kelsen 5, E-28049 Madrid, Spain; [Saitoh, Akira] Ehime Univ, Grad Sch Sci & Engn, Matsuyama, Ehime, Japan', 'Munoz, F (reprint author), CSIC, Inst Ceram & Glass, Kelsen 5, E-28049 Madrid, Spain.', 'fmunoz@icv.csic.es', 'MINECO of Spain [MAT2013-48246-C2-1-P, MAT2013-48246-C2-2-P, MAT2015-65356-C3-1-R]; Basque Country University; CSIC', 'The authors thank funding from projects MAT2013-48246-C2-1-P, MAT2013-48246-C2-2-P and MAT2015-65356-C3-1-R from MINECO of Spain, Basque Country Unive', '', '27', 0, 0, 'ELSEVIER SCIENCE BV', 'AMSTERDAM', 'PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS', '0022-3093', '', 'J NON-CRYS', 'J. Non-Cry', 'OCT 1', '2017', '473', '', '', '', '', '125', '131', '', '10.1016/j.jnoncrysol.2017.08.005', '', '7', '', 'Mater', 'Mater', 'FJ0EN', 'WOS:0', 1, 0),
(502, '', 'J', 'Posada, E;Lopez-Salas, N;Carriazo, D;Munoz-Marquez, MA;Ania, CO;Jimenez-Rioboo, RJ;Gutierrez, MC;Ferrer, ML;del Monte, F;', 'Posada, E.; Lopez-Salas, N.; Carriazo, D.; Munoz-Marquez, M. A.; Ania, C. O.; Jimenez-Rioboo, R. J.; Gutierrez, M. C.; Ferrer, M. L.; del Monte, F.', '', '', '', '', 'Predicting the suitability of aqueous solutions of deep eutectic solvents for preparation of co-continuous porous carbons via spinodal decomposition p', 'CARBON', '', '', 'English', 'Article', '', '', '', '', '', '', 'Spinodal decomposition (SD) processes have proved effective for the synthesis of macro-and mesoporous materials. Despite the theoretical aspects of SD processes are well understood, finding the proper experimental conditions - both the components as well as the ratio in which they have to be combined - to attain co-continuous structures is a non-predictable and quite tedious process, typically based on trial and error. The challenge is finding a "tool" capable to predict the suitability of a particular starting solution to undergo SD processes. Here in, we used aqueous solutions of deep eutectic solvents (DESs) for the preparation via SD of co-continuous porous carbons, the morphologies of which ranged from spinodal to aggregates-of-particles-like just depending on dilution. Despite the starting DES/H2O binary mixture was macroscopically homogeneous, Brillouin spectroscopy revealed the occurrence of certain nanostructural rearrangements within a dilution range that coincided with that used for preparation of carbons with morphologies transitioning from spinodal to aggregates-of-particles-like. Moreover, carbons exhibited a noticeable degree of heteroatom co-doping - e.g. N and P - and proved particularly effective for CO2 capture with adsorptions of up to 4.7 mmol/g at 0 degrees C and 760 mbar. (C) 2017 Elsevier Ltd. All rights reserved.', '[Posada, E.; Lopez-Salas, N.; Carriazo, D.; Jimenez-Rioboo, R. J.; Gutierrez, M. C.; Ferrer, M. L.; del Monte, F.] CSIC, ICMM, Mat Sci Factory, Campus', 'Ferrer, ML; del Monte, F (reprint author), CSIC, ICMM, Mat Sci Factory, Campus Cantoblanco, Madrid 28049, Spain.', 'mferrer@icmm.csic.es; delmonte@icmm.csic.es', 'MINECO/FEDER [MAT2015-68639-R, MAT2015-65356-C3-1-R]; Comunidad de Madrid Excellence Network [S2013/MIT-2740]', 'This work was supported by MINECO/FEDER (Project Numbers MAT2015-68639-R and MAT2015-65356-C3-1-R) and Comunidad de Madrid Excellence Network (Project', '', '115', 1, 1, 'PERGAMON-ELSEVIER SCIENCE LTD', 'OXFORD', 'THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND', '0008-6223', '', 'CARBON', 'Carbon', 'OCT', '2017', '123', '', '', '', '', '536', '547', '', '10.1016/j.carbon.2017.07.083', '', '12', '', 'Chemi', 'Chemi', 'FG5NJ', 'WOS:0', 1, 0),
(503, '', 'J', 'Posada, E;Lopez-Salas, N;Rioboo, RJJ;Ferrer, ML;Gutierrez, MC;del Monte, F;', 'Posada, E.; Lopez-Salas, N.; Jimenez Rioboo, R. J.; Ferrer, M. L.; Gutierrez, M. C.; del Monte, F.', '', '', '', '', 'Reline aqueous solutions behaving as liquid mixtures of H-bonded co-solvents: microphase segregation and formation of co-continuous structures as indi', 'PHYSICAL CHEMISTRY CHEMICAL PHYSICS', '', '', 'English', 'Article', '', '', '', '', '', '', 'Deep eutectic solvents (DESs) offer a suitable alternative to conventional solvents in terms of both performance and cost-effectiveness. Some DESs also offer certain green features, the greenness of which is notoriously enhanced when combined with water. Aqueous DES dilutions are therefore attracting great attention as a novel green medium for biotechnological processes, with the aqueous dilutions of reline a DES composed of urea and choline chloride -being one of the most studied systems. Despite their macroscopic homogeneous appearance, both H-1 NMR spectroscopic studies and molecular dynamics simulations have revealed the occurrence of certain dynamic heterogeneity at a microscopic molecular level. Ultrasonic measurements were also used with the aim of getting further insights but nonconclusive results were obtained. Herein, we have studied aqueous reline dilutions by Brillouin spectroscopy given its proved suitability for detecting local structure rearrangements in liquid mixtures of H-bonded co-solvents. Brillouin spectroscopy revealed the formation of a co-continuous structure resulting from local structure rearrangements and micro-segregation into aqueous and DES phases. Interestingly, there is agreement between H-1 NMR and Brillouin spectroscopy when pointing to the DES content where microphase segregation and formation of co-continuous structures occurred.', '[Posada, E.; Lopez-Salas, N.; Jimenez Rioboo, R. J.; Ferrer, M. L.; Gutierrez, M. C.; del Monte, F.] CSIC, ICMM, Campus Cantoblanco, Madrid 28049, Spa', 'Ferrer, ML; del Monte, F (reprint author), CSIC, ICMM, Campus Cantoblanco, Madrid 28049, Spain.', 'mferrer@icmm.csic.es; delmonte@icmm.csic.es', 'MINECO [MAT201568639-R, MAT2015-65356-C3-1-R]; Comunidad de Madrid Excellence Network [S2013/MIT-2740]; MINECO/FEDER for a FPI', 'This work was supported by MINECO (Project Numbers MAT201568639-R and MAT2015-65356-C3-1-R) and Comunidad de Madrid Excellence Network (Project Number', '', '39', 2, 2, 'ROYAL SOC CHEMISTRY', 'CAMBRIDGE', 'THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND', '1463-9076', '', 'PHYS CHEM ', 'Phys. Chem', 'JUL 14', '2017', '19', '26', '', '', '', '17103', '17110', '', '10.1039/c7cp02180a', '', '8', '', 'Chemi', 'Chemi', 'FA4OP', 'WOS:0', 1, 0),
(504, '', 'J', 'Perez-Mezcua, D;Bretos, I;Jimenez, R;Ricote, J;Jimenez-Rioboo, RJ;da Silva, CG;Chateigner, D;Fuentes-Cobas, L;Sirera, R;Calzada, ML;', 'Perez-Mezcua, Dulce; Bretos, Inigo; Jimenez, Ricardo; Ricote, Jesus; Jose Jimenez-Rioboo, Rafael; Goncalves da Silva, Cosmelina; Chateigner, Daniel; Fuentes-Cobas, Luis; Sirera, Rafael; Lourdes Calzada, M.', '', '', '', '', 'Photochemical solution deposition of beta-Bi2O3 thin films', 'JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY', '', '', 'English', 'Article; Procee', 'Spring Meeting of the European-Materials-Research-Society (E-MRS) / 2nd Symposium AA on Solution Pro', 'MAY 02-06,', 'Lille, FRANCE', 'European Mat Res Soc', '', 'Photochemistry; Sol-gel; Metastable phases; beta-Bi2O3; Room-temperature stabilization; Thin films; Low-temperature processing; Thin films', 'The non-equilibrium beta-Bi2O3 polymorph is stabilized in thin films by a photochemical synthesis method. A strong ultraviolet-absorbing bismuth(III)-N-methyldiethanolamine complex is synthesized in solution as an ideal precursor for the beta-Bi2O3 phase. Ultraviolet-light induces the formation of an amorphous -Bi-O-Bi- continuous network in the films deposited from the former solution that easily converts into the beta-Bi2O3 polymorph at a temperature as low as 250 A degrees C. The room temperature stabilization of the beta-Bi2O3 phase is confirmed by their structural characterization using four-circle X-ray diffractometry. This study unequivocally identified the tetragonal crystal structure of the beta-Bi2O3 polymorph in the films. The high phase purity of these beta-Bi2O3 films is responsible for their exceptional visible-light photocatalytic activity, thus enabling the applications of the films of this metastable phase at room-temperature conditions.', '[Perez-Mezcua, Dulce; Bretos, Inigo; Jimenez, Ricardo; Ricote, Jesus; Jose Jimenez-Rioboo, Rafael; Lourdes Calzada, M.] CSIC, ICMM, C Sor Juana Ines C', 'Calzada, ML (reprint author), CSIC, ICMM, C Sor Juana Ines Cruz 3, Madrid 28049, Spain.', 'lcalzada@icmm.csic.es', 'Spanish Project [MAT2013-40489-P, MAT2016-76851-R]; Fundacion General CSIC (Spanish ComFuturoProgramme)', 'This work has been financed by the Spanish Project MAT2013-40489-P and MAT2016-76851-R. I.B. acknowledges the financial support by Fundacion General C', '', '38', 0, 0, 'SPRINGER', 'DORDRECHT', 'VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS', '0928-0707', '', 'J SOL-GEL ', 'J. Sol-Gel', 'FEB', '2017', '81', '2', 'SI', '', '', '355', '361', '', '10.1007/s10971-016-4295-6', '', '7', '', 'Mater', 'Mater', 'EM0TY', 'WOS:0', 1, 0),
(505, '', 'J', 'Camps, I.;Borlaf, M.;Toudert, J.;de Andres, A.;Colomer, M. T.;Moreno, R.;Serna, R.;', '', '', '', '', '', 'Evidencing early pyrochlore formation in rare-earth doped TiO2 nanocrystals: Structure sensing via VIS and NIR Er3+ light emission', 'JOURNAL OF ALLOYS AND COMPOUNDS', '', '', '', '', '', '', '', '', '', '', 'Er3+ doping of TiO2 colloidal nanocrystals enhances their performance for photo-induced applications. Such doping is known to delay the anatase to rutile transformation under thermal treatment; nonetheless relevant information on the Er3+ light emission and location within the TiO2 structures is still incomplete. Er3+ photoluminescence emission both in the visible (upconverted) and infrared photoluminescence is used for the first time to probe the ions location within the different TiO2 structures. The results show that Er3+ ions in the as-prepared xerogels are not embedded in the anatase crystallites, and only upon thermal treatment Er3+ diffusion is induced into crystal interstitial positions to form a solid solution. At higher temperatures rutile is formed inducing Er3+ segregation and giving rise to the formation of pyrochlore (Er2Ti2O7), as shown by a distinct emission in the infrared spectrum due to the Er3+ ions located within the pyrochlore compound. Although pyrochlore is usually a high temperature phase, analysis of the photoluminescence allows its labeling at temperatures as low as 600-700 degrees C for small Er3+ concentrations (1 mol %). Increasing Er3+ concentration promotes its enrichment at the nanocrystallites surface accomplished by the anatase-to-rutile phase transformation, suggesting that Er3+ ions control the TiO2 nanocrystals surface properties. (C) 2017 Elsevier B.V. All rights reserved.', '', '', '', '', '', '', '', 0, 0, '', '', '', '0925-8388', '', '', '', 'FEB 25 2018', '2018', '735', '', '', '', '', '2267', '2274', '', '10.1016/j.jallcom.2017.11.262', '', '', '', '', '', '', 'WOS:0', 1, 0),
(506, '', 'J', 'Rodriguez-Palomo, Adrian;Cespedes, Eva;Hernandez-Pinilla, David;Prieto, Carlos;', '', '', '', '', '', 'High-temperature air-stable solar selective coating based on MoSi2-Si3N4 composite', 'SOLAR ENERGY MATERIALS AND SOLAR CELLS', '', '', '', '', '', '', '', '', '', '', 'The thermal stability in air of solar selective coatings based on the novel MoSi2-Si3N4 hybrid composite has been investigated here for the first time. Although thermal stability of solar absorbers is typically examined under vacuum, high temperature air stability is required for practical applications in concentration solar power (CSP) technologies: solar tower systems receivers operate in air and, on the other hand, air stability is highly preferred in parabolic trough collector systems due to occasionally undesired losses of vacuum conditions. In this work, the effect of different layers combination, prepared by sputtering, on the optical performance after high temperature annealing has been investigated. Two different standard substrates (stainless steel and Inconel) have been explored. It is shown that silver layer, typically used in SSC as IR reflector, strongly affects the stack thermal stability in air, leading to important degradation. For SSC stacks with the Inconel/MoSi2-Si3N4/Si3N4 structure (onto Inconel substrate), a good thermal stability in air is obtained, leading to just a slight variation of the absorptivity after air annealing at 600 degrees C, probably due to partial Si3N4 oxidation. Best optical performance is achieved for the Inconel substrate, using and additional Al2O3 barrier on top, comprising the stack the following structure: Inconel/MoSi2-Si3N4/Si3N4/Al2O3. This combination exhibits very good optical performance, even after annealing at 700 degrees C in air. The Performance Criterion (PC) according to the International Energy Agency, evaluated after successive air annealing cycles of 100 h at 600 degrees C, gets 0.02, which is considerably smaller than 0.05, fulfilling this material the PC for practical applications. Our results evidence that the MoSi2-Si3N4 absorber deposited onto Inconel substrate and capped with a Si3N4/Al2O3 layer on top (acting as antireflective and protective barrier) is a very promising selective coating for solar receivers operating in air at temperatures about 600 degrees C.', '', '', '', '', '', '', '', 0, 0, '', '', '', '0927-0248', '', '', '', 'JAN 2018', '2018', '174', '', '', '', '', '50', '55', '', '10.1016/j.solmat.2017.08.021', '', '', '', '', '', '', 'WOS:0', 1, 0),
(507, '', 'J', 'Anemone, Gloria;Weingarten, Christian;Al Taleb, Amjad;Prieto, Carlos;Farias, Daniel;', '', '', '', '', '', 'Ultrasmooth metal thin films on curved fused silica by laser polishing', 'APPLIED PHYSICS LETTERS', '', '', '', '', '', '', '', '', '', '', 'The fabrication of atomically smooth metal films on supporting oxides is a quite demanding task, since most physical vapor deposition methods used on metals do not work properly on oxide substrates. Here, we report an alternative procedure, based on performing laser polishing of a fused silica substrate before depositing the metallic thin film. This reduces the RMS surface roughness of fused silica by ca. 33%, and increases the maximum grain size of the metallic film from 200 nm to 1200 nm. The method has been applied to a fused silica parabolic lens, which has been coated with a graphene-terminated Ru thin film. The reduction of surface roughness caused by laser polishing leads to the formation of ultrasmooth Ru thin films. Crystallinity and subnanometer roughness of the metal coating are demonstrated by the observation of He diffraction from a macroscopically curved surface. Published by AIP Publishing.', '', '', '', '', '', '', '', 0, 0, '', '', '', '0003-6951', '', '', '', 'OCT 30 2017', '2017', '111', '18', '', '', '', '', '', '181602', '10.1063/1.4999917', '', '', '', '', '', '', 'WOS:0', 1, 0),
(508, '', 'J', 'Jimenez-Villacorta, Felix;Alvarez-Fraga, Leo;Bartolome, Javier;Climent-Pascual, Esteban;Salas-Colera, Eduardo;Aguilar-Pujol, Montserrat X.;Ramirez-Jimenez, Rafael;Cremades, Ana;Prieto, Carlos;de Andres, Alicia;', '', '', '', '', '', 'Nanocrystalline cubic ruthenium carbide formation in the synthesis of graphene on ruthenium ultrathin films', 'JOURNAL OF MATERIALS CHEMISTRY C', '', '', '', '', '', '', '', '', '', '', 'Graphene is grown by chemical vapour deposition on ruthenium ultrathin films down to a nominal thickness of 5 nm. While at 910 degrees C multilayer graphitic films are obtained, single layer defective graphene is formed at 1000 degrees C. The extremely thin Ru films allow the formation of a novel nano-crystalline ruthenium carbide phase to be discerned by combining synchrotron X-ray diffraction, synchrotron X-ray absorption spectroscopy and electron diffraction. The ruthenium carbide (Ru-C) phase formed at or above 1000 degrees C presents cubic symmetry (cP) with a lattice parameter of 2.927 angstrom and a Ru-C distance of around 2.31 angstrom. The increase of C solubility in ruthenium seems to be sufficient to trigger the stabilization of the Ru-C phase during graphene growth preferentially in grains with orientation different to (0001). The structural transition from hcp Ru to cP Ru-C is not limited to a shell; it occurs for the whole grain. The formation of the carbide seems to favour the synthesis of single layer graphene by hindering the segregation of carbon to the surface during cooling. This simple method allows nano-crystalline ruthenium-carbide films to be obtained as well as graphene covered Ru nanograins, both with size control. These new materials are foreseen to present interesting mechanical, catalytic and sensing properties.', '', '', '', '', '', '', '', 0, 0, '', '', '', '2050-7526', '', '', '', 'OCT 21 2017', '2017', '5', '39', '', '', '', '10260', '10269', '', '10.1039/c7tc02855e', '', '', '', '', '', '', 'WOS:0', 1, 0),
(509, '', 'J', 'Colomer, M. T.;Bartolome, J.;Ortiz, A. L.;de Andres, A.;', '', '', '', '', '', 'Raman characterization and photoluminescence properties of La1-xTbxPO4 center dot nH(2)O and La1-xTbxPO4 phosphor nanorods prepared by microwave -assi', 'CERAMICS INTERNATIONAL', '', '', '', '', '', '', '', '', '', '', 'The effect of the Tb3+ doping content (in the range 0-100 mol%) on the structure (using Raman spectroscopy) and photoluminescence (PL) properties of both rhabdophane-type La1-xTbxPO4 center dot nH(2)O and monazite (-)type La1-xTbxPO4 single-crystal nanorods was investigated. La1-xTbxPO4 center dot nH(2)O was directly obtained by microwave assisted hydrothermal synthesis and La1-xTbxPO4 by calcination of La1-xTbxPO4 center dot nH(2)O at 700 degrees C in air for 2 h. It was found that the characteristic Raman bands shift to higher wavenumbers and become broader with increasing Tb3+ concentration, which is attributed to attendant unit-cell volume reduction. The PL due to the Tb3+ f-f transitions has been studied with continuous and pulsed excitations. The PL intensity increases with doping and is maximum for La0.80Tb0.20PO4 center dot nH(2)O and La0.85Tb0.15PO4, i.e.,for rhabdophane and monazite type structures, respectively. A quenching effect is detected for concentrations below x=0.05, but constant efficiency is obtained at higher doping. The calcination increases the efficiency by a factor around 2 due to the combined effects of water molecules and defect elimination. The PL decay curves reveal a long lifetime attributable to single Tb3+ ions which is almost independent of doping for monazite nanorods (5-4.5 ms), and a shorter one around 0.2 ms most likely due to Tb3+ dimmers.', '', '', '', '', '', '', '', 0, 0, '', '', '', '0272-8842', '', '', '', 'OCT 1 2017', '2017', '43', '14', '', '', '', '10840', '10847', '', '10.1016/j.ceramint.2017.05.110', '', '', '', '', '', '', 'WOS:0', 1, 0),
(510, '', 'J', 'Perez-Rivero, A.;Cabero, M.;Varela, M.;Ramirez-Jimenez, R.;Mompean, F. J.;Santamaria, J.;Martinez, J. L.;Prieto, C.;', '', '', '', '', '', 'Thermoelectric functionality of Ca3Co4O9 epitaxial thin films on yttria-stabilized zirconia crystalline substrate', 'JOURNAL OF ALLOYS AND COMPOUNDS', '', '', '', '', '', '', '', '', '', '', 'Layered cobaltite Ca3Co4O9 is one of the most interesting materials for energy conversion due to its excellent thermoelectric properties and stability at high temperatures. However, the best performance of this material is achieved for single crystals and epitaxial films. Within this framework, an important role is played by the substrate, which should promote epitaxial growth and that should have suitable thermal properties for its integration in devices. In this work, we report on the preparation of epitaxial thin films of Ca3Co4O9 by sputtering using low cost ceramic target on cubic yttria-stabilized zirconia (YSZ(100)) that is typically the standard for low thermal conductivity material and on hexagonal sapphire (Al2O3(0001)). The quality of the epitaxial films and its microstructure has been studied to explain the thermoelectric properties obtained for both substrates. YSZ(100) substrate provides Ca3Co4O9 films with enhanced Seebeck coefficient and Al2O3(0001) allows improved conductive Ca3Co4O9 films that finally, at 200 degrees C, results in a substrate-modified Z''T figure of merit one order of magnitude higher for Ca3Co4O9 on YSZ(100) than on Al2O3(0001) substrate. (C) 2017 Elsevier B.V. All rights reserved.', '', '', '', '', '', '', '', 0, 0, '', '', '', '0925-8388', '', '', '', 'JUL 5 2017', '2017', '710', '', '', '', '', '151', '158', '', '10.1016/j.jallcom.2017.03.191', '', '', '', '', '', '', 'WOS:0', 1, 0),
(511, '', 'J', 'Alvarez-Fraga, Leo;Rubio-Zuazo, Juan;Jimenez-Villacorta, Felix;Climent-Pascual, Esteban;Ramirez-Jimenez, Rafael;Prieto, Carlos;de Andres, Alicia;', '', '', '', '', '', 'Oxidation Mechanisms of Copper under Graphene: The Role of Oxygen Encapsulation', 'CHEMISTRY OF MATERIALS', '', '', '', '', '', '', '', '', '', '', 'The oxidation and corrosion of copper are fundamental issues studied for many decades due to their ubiquitous and transversal impact. However, the oxidation of copper used as catalyst for graphene synthesis has opened a singular problem not yet solved. Contradictory results are reported about the protecting or enhancing role of graphene in copper oxidation. We study short- and long-term oxidation of copper with different characteristics, such as oxygen content and morphology, with and without graphene, and in polycrystalline copper foils and almost totally textured (100) and (111) copper films on MgO and sapphire substrates, respectively. We propose a mechanism to explain the enhanced oxidation of polycrystalline copper originated by oxygen encapsulated by the graphene impermeable layer during graphene growth. The initial oxygen content and the existence of grain boundaries are the main factors that determine the relevance of this process. Graphene is shown to prevent oxidation from the atmosphere for any of the copper substrates but also promotes slow oxidation derived by the release of out-of-equilibrium encapsulated oxygen. The formation of bubbles after several months evidence this slow release. The occluded oxygen in graphene covered copper is demonstrated by comparing the oxygen to copper ratio at different depths using hard X-ray photoelectron spectroscopy for samples with and without graphene.', '', '', '', '', '', '', '', 1, 1, '', '', '', '0897-4756', '', '', '', 'APR 11 2017', '2017', '29', '7', '', '', '', '3257', '3264', '', '10.1021/acs.chemmater.7b00554', '', '', '', '', '', '', 'WOS:0', 1, 0),
(512, '', 'J', 'Prieto, C.;Cespedes, E.;Hernandez-Pinilla, D.;Rodriguez-Palomo, A.;Sanchez, O.;Jimenez-Villacorta, F.;Salas-Colera, E.;', '', '', '', '', '', 'Mo coordination and Thermal Stability of the Mo-Si3N4 Absorbers for Solar Selective Coatings', 'MRS ADVANCES', '', '', '', '', '', '', '', '', '', '', 'The study of the chemical stability of solar selective coatings (SSC) for concentrated solar power (CSP) becomes essential for their use at high temperatures. In this paper, the short range order around Mo in Mo-Si3N4 cermets is studied for the first time by X-ray absorption spectroscopy. The information obtained by extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) spectroscopies gives new insights of the origin of the optical behavior of the cermets cermets after vacuum and air annealing treatments. The established optical and structural correlation becomes of great importance for the design and optimization of SSC for practical applications.', '', '', '', '', '', '', '', 1, 1, '', '', '', '2059-8521', '', '', '', '2017', '2017', '2', '53', '', '', '', '3061', '3068', '', '10.1557/adv.2017.408', '', '', '', '', '', '', 'WOS:0', 1, 0),
(513, '', 'S', 'Alvarez, A. L.;Borras, F.;Moreno, J. S.;Garcia-Velez, M.;Coya, C.;Climent, E.;Munuera, C.;de Andres, A.;', '', '', '', 'IEEE', '', 'The use of electrical machining for patterning and oxidation of graphene in low cost manufacturing', '2017 SPANISH CONFERENCE ON ELECTRON DEVICES (CDE)', 'Spanish Conference on Electron Devices', '', '', '', 'Spanish Conference on Electron Devices (CDE)Spanish Conference on Electron Devices (CDE)', 'FEB 08-10,', 'Barcelona, SPAINBarcelona, SPAIN', '', '', '', 'Graphene patterning and local oxidation of graphene are performed at high speed over large areas by means of controlled electrical micro-discharges, using a home-made instrument. The optimum operating voltage is determined to obtain high quality straight lines of removed graphene in a dry environment. By properly adjusting the working voltage and humidity conditions, large spots of graphene oxide are obtained with high uniformity, which paves the way to achieve large single-layer graphene oxide substrates for different applications.', '', '', '', '', '', '', '', 0, 0, '', '', '', '2163-4971', '978-1-5090-5072-7', '', '', '2017', '2017', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', 'WOS:0', 1, 0),
(514, '', 'J', 'Colomer, M. T.;Bartolome, J.;Ortiz, A. L.;de Andres, A.;', '', '', '', '', '', 'Raman characterization and photoluminescence properties of La1-xTbxPO4 center dot nH(2)O and La1-xTbxPO4 phosphor nanorods prepared by microwave -assi', 'CERAMICS INTERNATIONAL', '', '', '', '', '', '', '', '', '', '', 'The effect of the Tb3+ doping content (in the range 0-100 mol%) on the structure (using Raman spectroscopy) and photoluminescence (PL) properties of both rhabdophane-type La1-xTbxPO4 center dot nH(2)O and monazite (-)type La1-xTbxPO4 single-crystal nanorods was investigated. La1-xTbxPO4 center dot nH(2)O was directly obtained by microwave assisted hydrothermal synthesis and La1-xTbxPO4 by calcination of La1-xTbxPO4 center dot nH(2)O at 700 degrees C in air for 2 h. It was found that the characteristic Raman bands shift to higher wavenumbers and become broader with increasing Tb3+ concentration, which is attributed to attendant unit-cell volume reduction. The PL due to the Tb3+ f-f transitions has been studied with continuous and pulsed excitations. The PL intensity increases with doping and is maximum for La0.80Tb0.20PO4 center dot nH(2)O and La0.85Tb0.15PO4, i.e.,for rhabdophane and monazite type structures, respectively. A quenching effect is detected for concentrations below x=0.05, but constant efficiency is obtained at higher doping. The calcination increases the efficiency by a factor around 2 due to the combined effects of water molecules and defect elimination. The PL decay curves reveal a long lifetime attributable to single Tb3+ ions which is almost independent of doping for monazite nanorods (5-4.5 ms), and a shorter one around 0.2 ms most likely due to Tb3+ dimmers.', '', '', '', '', '', '', '', 0, 0, '', '', '', '0272-8842', '', '', '', 'OCT 1 2017', '2017', '43', '14', '', '', '', '10840', '10847', '', '10.1016/j.ceramint.2017.05.110', '', '', '', '', '', '', 'WOS:0', 1, 0),
(515, '', 'J', 'Serrano-Sanchez, Federico;Nemes, Norbert M.;Luis Martinez, Jose;Juan-Dura, Oscar;Antonio de la Torre, Marco;Teresa Fernandez-Diaz, Maria;Antonio Alonso, Jose;', '', '', '', '', '', 'Structural evolution of a Ge-substituted SnSe thermoelectric material with low thermal conductivity', 'JOURNAL OF APPLIED CRYSTALLOGRAPHY', '', '', '', '', '', '', '', '', '', '', 'Thermoelectric materials are expected to become new alternative sources of sustainable energy. Among them, the SnSe intermetallic alloy has been described as an excellent thermoelectric compound, characterized by an extremely low thermal conductivity with maximum performance at the onset of a structural phase transition at 800K. Recently, novel SnSe derivatives with Ge substitution have been synthesized by a direct arc-melting technique. This produces nanostructured polycrystalline samples that exhibit a record high Seebeck coefficient, anticipating an excellent performance above room temperature. Here, the structural phase transition from a GeS-type structure (space group Pnma) to a TlI-type structure (space group Cmcm) is investigated in situ via neutron powder diffraction (NPD) in the temperature range 298-853K for the selected composition Sn0.8Ge0.2Se. This transition takes place at 803K, as shown by differential scanning calorimetry. The analysis from the NPD data shows a non-monotonic behaviour of the anisotropic displacement parameters upon entering the domain of the Cmcm structure. The energies of the atomic vibrations have been quantitatively analysed by fitting the temperature-dependent mean-square displacements to Einstein oscillators. The thermal conductivity of Sn0.8Ge0.2Se is as low as 0.35Wm(-1)K(-1) at 773K, which mostly represents the lattice thermal contribution.', '', '', '', '', '', '', '', 0, 0, '', '', '', '1600-5767', '', '', '', 'APR 2018', '2018', '51', '', '', '', '', '337', '343', '', '10.1107/S1600576718000808', '', '', '', '', '', '', 'WOS:0', 1, 0),
(516, '', 'J', 'Serrano-Sanchez, F.;Prado-Gonjal, J.;Nemes, N. M.;Biskup, N.;Varela, M.;Dura, O. J.;Martinez, J. L.;Fernandez-Diaz, M. T.;Fauth, F.;Alonso, J. A.;', '', '', '', '', '', 'Low thermal conductivity in La-filled cobalt antimonide skutterudites with an inhomogeneous filling factor prepared under high-pressure conditions', 'JOURNAL OF MATERIALS CHEMISTRY A', '', '', '', '', '', '', '', '', '', '', 'La-filled skutterudites LaxCo(4)Sb(12) (x = 0.25 and 0.5) have been synthesized and sintered in one step under high-pressure conditions at 3.5 GPa in a piston-cylinder hydrostatic press. The structural properties of the reaction products were characterized by synchrotron X-ray powder diffraction, clearly showing an uneven filling factor of the skutterudite phases, confirmed by transmission electron microscopy. The non-homogeneous distribution of La filling atoms is adequate to produce a significant decrease in lattice thermal conductivity, mainly due to strain field scattering of high-energy phonons. Furthermore, the lanthanum filler primarily acts as an Einstein-like vibrational mode having a strong impact on the phonon scattering. Extra-low thermal conductivity values of 2.39 W m(-1) K-1 and 1.30 W m(-1) K-1 are measured for La0.25Co4Sb12 and La0.5Co4Sb12 nominal compositions at 780 K, respectively. Besides this, lanthanum atoms have contributed to increase the charge carrier concentration in the samples. In the case of La0.25Co4Sb12, there is an enhancement of the power factor and an improvement of the thermoelectric properties.', '', '', '', '', '', '', '', 0, 0, '', '', '', '2050-7488', '', '', '', 'JAN 7 2018', '2018', '6', '1', '', '', '', '118', '126', '', '10.1039/c7ta08545a', '', '', '', '', '', '', 'WOS:0', 1, 0),
(517, '', 'J', 'Prado-Gonjal, J.;Serrano-Sanchez, F.;Nemes, N. M.;Dura, O. J.;Martinez, J. L.;Fernandez-Diaz, M. T.;Fauth, F.;Alonso, J. A.;', '', '', '', '', '', 'Extra-low thermal conductivity in unfilled CoSb3-delta skutterudite synthesized under high-pressure conditions', 'APPLIED PHYSICS LETTERS', '', '', '', '', '', '', '', '', '', '', 'Thermoelectric CoSb3-delta skutterudite was synthesized and sintered in one step under high-pressure conditions at 3.5 GPa in a piston-cylinder hydrostatic press. Structural analysis carried out from synchrotron x-ray powder diffraction data reveals a significant Sb deficiency in this material. The introduction of point defects in the form of Sb vacancies distributed at random in the structure leads to an impressive reduction (> 50%) of the total thermal conductivity, kappa, which is one of the main ingredients of good thermoelectric materials. This suggests phonon scattering effects originated in the Sb defects, which drives to a better improvement in kappa than that achieved by the conventional strategy of filling the cages of the skutterudite structure with rare earths or other heavy cations. In parallel, changes in the electronic band structure caused by point variation of the stoichiometry produce an undesired increment in the electrical resistivity. Nevertheless, the low thermal conductivity combined with a high Seebeck coefficient (-434 mu VK-1 at 500 K) originates a relatively large figure of merit (ZT = 0.12 at 550 K) for CoSb2.90(2). (C) 2017 Author(s).', '', '', '', '', '', '', '', 1, 1, '', '', '', '0003-6951', '', '', '', 'AUG 21 2017', '2017', '111', '8', '', '', '', '', '', '083902', '10.1063/1.4993283', '', '', '', '', '', '', 'WOS:0', 1, 0),
(518, '', 'J', 'Serrano-Sanchez, F.;Gharsallah, M.;Nemes, N. M.;Biskup, N.;Varela, M.;Martinez, J. L.;Fernandez-Diaz, M. T.;Alonso, J. A.;', '', '', '', '', '', 'Enhanced figure of merit in nanostructured (Bi,Sb)(2)Te-3 with optimized composition, prepared by a straightforward arc-melting procedure', 'SCIENTIFIC REPORTS', '', '', '', '', '', '', '', '', '', '', 'Sb-doped Bi2Te3 is known since the 1950s as the best thermoelectric material for near-room temperature operation. Improvements in material performance are expected from nanostructuring procedures. We present a straightforward and fast method to synthesize already nanostructured pellets that show an enhanced ZT due to a remarkably low thermal conductivity and unusually high Seebeck coefficient for a nominal composition optimized for arc-melting: Bi0.35Sb1.65Te3. We provide a detailed structural analysis of the Bi2-xSbxTe3 series (0 <= x <= 2) based on neutron powder diffraction as a function of composition and temperature that reveals the important role played by atomic vibrations. Arc-melting produces layered platelets with less than 50 nm-thick sheets. The low thermal conductivity is attributed to the phonon scattering at the grain boundaries of the nanosheets. This is a fast and cost-effective production method of highly efficient thermoelectric materials.', '', '', '', '', '', '', '', 1, 1, '', '', '', '2045-2322', '', '', '', 'JUL 24 2017', '2017', '7', '', '', '', '', '', '', '6277', '10.1038/s41598-017-05428-4', '', '', '', '', '', '', 'WOS:0', 1, 0),
(519, '', 'J', 'Gharsallah, Mouna;Serrano-Sanchez, Federico;Nemes, Norbert M.;Martinez, Jose Luis;Alonso, Jose Antonio;', '', '', '', '', '', 'Influence of Doping and Nanostructuration on n-Type Bi-2(Te0.8Se0.2)(3) Alloys Synthesized by Arc Melting', 'NANOSCALE RESEARCH LETTERS', '', '', '', '', '', '', '', '', '', '', 'In competitive thermoelectric devices for energy conversion and generation, high-efficiency materials of both ntype and p-type are required. For this, Bi2Te3-based alloys have the best thermoelectric properties in room temperature applications. Partial replacement of tellurium by selenium is expected to introduce new donor states in the band gap, which would alter electrical conductivity and thermopower. We report on the preparation of n-type Bi-2(Te1-xSex)(3) solid solutions by a straightforward arc-melting technique, yielding nanostructured polycrystalline pellets. X-ray and neutron powder diffraction was used to assess Se inclusion, also indicating that the interactions between quintuple layers constituting this material are weakened upon Se doping, while the covalency of intralayer bonds is augmented. Moreover, scanning electron microscopy shows large surfaces perpendicular to the c crystallographic axis assembled as stacked sheets. Grain boundaries related to this 2D nanostructuration affect the thermal conductivity reducing it below 0.8 Wm(-1)K(-1) at room temperature. Furthermore, Se doping increases the absolute Seebeck coefficient up to -140 mu V K-1 at 400 K, which is also beneficial for improved thermoelectric efficiency.', '', '', '', '', '', '', '', 1, 1, '', '', '', '1556-276X', '', '', '', 'JAN 17 2017', '2017', '12', '', '', '', '', '', '', '47', '10.1186/s11671-016-1823-9', '', '', '', '', '', '', 'WOS:0', 1, 0);

-- --------------------------------------------------------

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-- --------------------------------------------------------

--
-- Estructura de tabla para la tabla `projects`
--

CREATE TABLE IF NOT EXISTS `projects` (
  `Id` int(11) NOT NULL AUTO_INCREMENT,
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  `FU` varchar(150) CHARACTER SET utf8 COLLATE utf8_spanish_ci NOT NULL,
  `PE` varchar(250) CHARACTER SET utf8 COLLATE utf8_spanish_ci NOT NULL,
  `PI` varchar(50) CHARACTER SET utf8 COLLATE utf8_spanish_ci NOT NULL,
  `AU` varchar(250) CHARACTER SET utf8 COLLATE utf8_spanish_ci NOT NULL,
  `BD` varchar(15) CHARACTER SET utf8 COLLATE utf8_spanish_ci NOT NULL,
  `ED` varchar(15) CHARACTER SET utf8 COLLATE utf8_spanish_ci NOT NULL,
  `FA` varchar(10) CHARACTER SET utf8 COLLATE utf8_spanish_ci NOT NULL,
  `NP` varchar(5) CHARACTER SET utf8 COLLATE utf8_spanish_ci NOT NULL,
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--
-- Volcado de datos para la tabla `projects`
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INSERT INTO `projects` (`Id`, `TI`, `FU`, `PE`, `PI`, `AU`, `BD`, `ED`, `FA`, `NP`, `SG`) VALUES
(3, 'Graphene-based hybrid materials for optoelectronic applications: Properties optimization and process of cost-effective devices', 'MINECO, MAT2012-37276-C03-01', '', 'A. de Andres', '', '2013', '2016', '', '', 1),
(4, 'New solar collector concept for high temperature operation in CSP applicationsâ€ (HITECO)', 'Cooperation Collaborative project FP7-ENERGY-2010-1 (European Commission, Grant Agreement. N. 256830', '', 'C. Prieto', '', '2010', '2013', '', '', 1),
(5, 'Avanzed hybrid materials for photonic applications', 'Comunidad de Madrid R&D Programme. S2009/MAT-1756', '', 'A. de Andrés', '', '2010', '2013', '', '', 1),
(6, 'New materials for spintronics and optoelectronic devices', 'MICINN, MAT2009-08786', '', 'C. Prieto', '', '2010', '2012', '', '', 1),
(8, 'Graphene Flagship', 'European Union Seventh Framework Program under Grant Agreement nº 604391 “Workpackage Materialsâ€', '', 'M. García-Hernández ', '', '2014', '', '', '', 1),
(9, 'Sistemas de almacenamiento de energía con grafeno para vehículos eléctricos', 'Proyecto Repsol-INSPIRE. UPM-CSIC', '', 'M. García-Hernández', '', '2013', '2015', '', '', 1),
(10, 'Materiales híbridos avanzados para aplicaciones fotónicas PHAMA 2.0', 'Comunidad de Madrid', 'ICMM, UAM, UCM, URJC, IMM', 'Coordinator C. López, PI A. de Andres', '', '01/11/2014', '30/10/2018', '', '', 1),
(11, 'PHOTONIC ADVANCED MATERIALS: PHAMA 2.0-CM', 'Comunidad de Madrid', 'CSIC, UAM, UCM, URJC', 'Coordinator C. López, IP of the group A. de Andre', '', 'october 2014', 'october 2018', '', '', 1),
(12, 'MATERIALES HIBRIDOS BASADOS EN GRAFENO PARA APLICACIONES EN ENERGIA Y DETECCION OPTICA', 'MINECO', 'ICMM-CSIC, UAM, URJC', 'Alicia de Andrés', '', 'January 2016', 'December 2018', '', '', 1);

-- --------------------------------------------------------

--
-- Estructura de tabla para la tabla `researchlines`
--

CREATE TABLE IF NOT EXISTS `researchlines` (
  `Id` int(11) NOT NULL AUTO_INCREMENT,
  `memberId` int(11) NOT NULL,
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  `show` int(1) NOT NULL,
  PRIMARY KEY (`Id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COLLATE=utf8_spanish_ci AUTO_INCREMENT=36 ;

--
-- Volcado de datos para la tabla `researchlines`
--

INSERT INTO `researchlines` (`Id`, `memberId`, `titlees`, `titleen`, `textes`, `texten`, `date`, `show`) VALUES
(14, 4, '', 'Electron', '', '<p>En esta seccion se puden porner muchas cosas</p>\r\n<p>imagen</p>\r\n<p><img src="upload/images/2.jpg" alt="" width="366" height="272" />seguida de texto, como se puede ver</p>\r\n<p>O se puede escribir al otro lado de la imagen<img src="upload/images/1.jpg" alt="" width="350" height="260" /></p>\r\n<p>o incluso escribir encima de la imagen</p>\r\n<p><a href="upload/documents/lab%20optical spectr.pptx"><img src="upload/images/1.jpg" alt="" width="350" height="260" /></a></p>\r\n<p>y a esta ultima enlzarla con un archivo</p>\r\n<p>&nbsp;</p>\r\n<p>Si se quieren separar dos texto se usa una tabla</p>\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>aqui va algo</td>\r\n<td>\r\n<p>y aqui va otro</p>\r\n</td>\r\n</tr>\r\n</tbody>\r\n</table>\r\n<table style="height: 44px; width: 100%;" width="680">\r\n<tbody>\r\n<tr>\r\n<td style="text-align: center;">aqui va algo</td>\r\n<td>\r\n<p style="text-align: right;">y aqui va otro</p>\r\n</td>\r\n</tr>\r\n</tbody>\r\n</table>', 1397197789, 0),
(15, 5, '', 'Nanomagnetism: magnetic interactions at the atomic and nanoscale', '', '', 1457687384, 1),
(16, 5, '', 'Mn-based rare-earth-free permanent magnetic nanostructured alloys', '', '<p><span lang="IT">The so-called &ldquo;rare-earth crisis&rdquo; in the 2010&rsquo;s re-ignited investigation in the search for new concepts </span><span lang="EN-US">in permanent magnetic materials design. &nbsp;The key factor is that advanced fabrication and analysis methods with precision down to the nanoscale that combine</span><span lang="IT"> composition and crystal structure control and optimization of the microstructure to manipulate the intrinsic magnetic properties of magnets (magnetization, exchange and magnetocrystalline anisotropy) or to enhance extrinsic magnetic features (remanence and coercivity) are now accessible. Thus, current&nbsp;strategies involve&nbsp;nanostructuring and control of crystal structure and composition to the nanoscale through metallurgical n</span><span lang="EN-US">on-equilibrium processing techniques&nbsp;</span><span lang="IT">convey optimization of the magnetic properties or advantageous modification of the fabrication process of new magnets.</span></p>', 1457687387, 1),
(18, 0, '', 'Oxides: bulk, thin films and nanoparticles', '', '<p>Preparation and study of oxides with interesting magnetic, optical and electronic properties and their correaltion to the structure and the nanosize. 1) structure-properties correlation: the structural repercussion of a high covalency of themetal-oxygen bond; effect of the charge disproportionation; 2) study of the metal-insulator transitions in oxides with strong electronic correlation; 3) comprehension of the magnetic coupling mechanisms and transport in magnetoresistive materials; 5) study of the ordered magnetic structures and charge ordering phenomena in mixed-valence systems; 6) Understanding multiferroism: unveiling the mechanisms of magnetic-electric coupling.</p>', 1421329260, 1),
(19, 0, '', 'Design, growth and characterisation of perovskite heterostructures', '', '<p>as macroscopic objects but also with particular focus on the study of interfaces (Oxidetronics). Optimizing the mechanisms involved in the control of: 1.-Magnetoresitsance/electroresitance from strain fields in piezo/manganite heterosetructures i. e. manipulation of the magnetic and electronic states of the ferromagnetic (manganite)layers byactuation upon the piezoelectric layer; 2.-Magnetoresistance in manganite cuprate heterostructures,determining the relative importance of the mechanism involved ( proximity effects, quasiparticles diffusion, stray fields and electronic reconstruction at the interfaces). 3. The electronic structure at the interface between complex oxides as a new route to doping alternative to the conventional chemical element substitution. This scenario includes the electrostatic doping due to electric field induced depletion and accumulation layers, bandbending at pn junctions or Schottky contacts as well as charge tranfer porcoesses stemming from valence or polarity mismatch.</p>', 1421329264, 1),
(20, 0, '', 'Magnetic nanostructured materials with tunable properties', '', '<p>Preparation of thin films formed by nanometric structures presenting ferromagnetism at room temperature by overcoming the superparamagnetic limit. The nanometric size of the ferromagnetic clusters allows, for instance, the extreme packing needed in high density recording materials or tunneling magnetoresistance needed for spintronic devices.</p>', 1421329243, 1),
(21, 0, '', 'Transparent films with electronic functionalities', '', '<p>Design, growth and optimization of new transparent oxide and nitride based thin films and multilayers with tuned electronic and piezoelectric properties.</p>', 1456320929, 1),
(22, 0, '', 'Organic-inorganic materials for optoelectronics', '', '<p><span style="font-size: 12pt;">Study, design and growth of hybrid devices based in inorganic and organic heterostructures for organic electronics applications as transistors and diodes</span></p>\r\n<p><span style="font-size: 12pt;">Rare earth based organic and inorganic materials for applications in lighting and optical thermometry and as phosphors. &nbsp;</span></p>\r\n<p><span style="font-size: 12pt;">Rare earth doped nanoparticles</span></p>\r\n<p><span style="font-size: 12pt;">Metal organic frameworks with rare earths (MOF-Re)</span>&nbsp;</p>\r\n<h1><span style="color: #808080; font-size: 18pt;">Related Projects:</span></h1>\r\n<p><span style="font-size: 12pt;">&ldquo;Materiales h&iacute;bridos avanzados para aplicaciones fot&oacute;nicas&rdquo; Programa de I + D entre grupos de investigaci&oacute;n de la Comunidad de Madrid.&nbsp;<strong>S2009/MAT-1756</strong>.</span></p>\r\n<h1><span style="font-size: 18pt; color: #808080;">Some publications:</span></h1>', 1456321011, 1),
(23, 5, '', 'Magnetostructural nanomaterials', '', '<p>Magnetic materials presenting magnetostructural transitions are subject of intense study in the current days, due to their more than interesting properties, as well as to their potential applications in magnetic memory, caloric nd sensor devices. A very intereseting&nbsp;research pathway is the study of the magnetostructural transition of FeRh (AF-FM with simultaneous lattice expansion at around ambient temperatures) subjected to atomic substitution and nanostructuring effects. Results are providing exciting hints in order to develop&nbsp;nanomagnetic materials with tunable properties.</p>', 1457687385, 1),
(25, 2, '', 'Organic-inorganic materials for optoelectronic applications', '', '<p><img style="display: block; margin-left: auto; margin-right: auto;" src="upload/documents/Alicia/para webDSB.jpg" alt="" width="739" height="701" /></p>\r\n<h1><span style="color: #808080; font-size: 18pt;">Funded projects</span></h1>\r\n<p>&ldquo;Materiales h&iacute;bridos avanzados para aplicaciones fot&oacute;nicas&rdquo; Programa de I + D entre grupos de investigaci&oacute;n de la Comunidad de Madrid.&nbsp;<strong>S2009/MAT-1756</strong>.&nbsp;</p>\r\n<h1><span style="font-size: 18pt; color: #808080;">Selected publications:</span></h1>', 1420809943, 1),
(26, 2, 'Colossal magnetoresistive oxides and magnetic semiconductors', 'Oxides with colossal magnetoresistance', '', '<p><span style="font-size: 12pt;">Mecanisms of the magnetoresistance, phase coexistance and segregation, inhomogeneities, distortions and local structure of magnetic oxides. Phonons and electron-phonon interactions.</span></p>\r\n<p><span style="font-size: 12pt;">Ultra thin films and heterostructures of manganese perovskites and insulating oxides. Structure, interfases, substrate effects. Effects in the magnetic and transport properties related to the nanometric scale.</span></p>\r\n<p><strong><span style="font-size: 12pt;">Selected publications</span></strong>&nbsp;</p>', 1397034930, 1),
(27, 2, '', 'Graphene based materials for optoelectronics', '', '<h1>&nbsp;<span style="color: #808080; font-size: 18pt;">General objectives&nbsp;</span></h1>\r\n<p>Design and fabrication of hybrid materials with optimal symbiosis of organic semiconductors, inorganic nanoparticles and graphene properties.&nbsp;</p>\r\n<p>Search of new or improved features of the resulting nanostructured hybrid films,&nbsp;</p>\r\n<p>Applications: transparent electrodes and nanostructured active layers in photovoltaic cells, electroluminescent devices, field effect transistors and sensors.&nbsp;</p>\r\n<h1><span style="color: #808080; font-size: 18pt;"><strong>Approach</strong></span></h1>\r\n<p>Materials design and fabrication + Fundamental study of materials +&nbsp;&nbsp;Device fabrication +&nbsp;&nbsp;Technology development&nbsp;&nbsp;</p>\r\n<div><strong>Basic studies</strong></div>\r\n<p>Resonant Raman processes in graphene oxide&nbsp;</p>\r\n<p>Chemical and thermal reduction mechanisms in few layer thin films and bulk graphene oxides.</p>\r\n<p>Stacking of graphene oxide few-layer films and defects produced by thermal and chemcial rediction mechanisms&nbsp;</p>\r\n<p><img style="display: block; margin-left: auto; margin-right: auto;" src="upload/documents/Alicia/para webRaman.jpg" alt="" width="696" height="557" /></p>\r\n<h1><img style="display: block; margin-left: auto; margin-right: auto;" src="upload/documents/Alicia/para webDifrac.jpg" alt="" width="680" height="667" /></h1>\r\n<h1>&nbsp;<img src="upload/documents/Alicia/para webBrillouin_1.jpg" alt="" width="732" height="524" /></h1>\r\n<p><strong>Transparent electrodes: &nbsp;</strong>Cheap, green, scalable to large areas, Indium free, on any substrate, in particular&nbsp; flexible &nbsp;&rArr;&nbsp; Graphene oxide (GO)</p>\r\n<p>Optimization of chemically derived few-layer graphene films for transparent electrodes with doping control</p>\r\n<p>Hybrid graphene based materials: chemically derived graphene thin films or CVD graphene with metallic, semiconductor or oxide nanoparticles.&nbsp;</p>\r\n<p>&nbsp;</p>\r\n<p><strong>Graphene patterning and nanostructuring - graphene quantum dots&nbsp;</strong></p>\r\n<p>&nbsp;Large scale patterning of GO and G films for integration in devices,&nbsp;&nbsp;Nano-Graphene-GQDs</p>\r\n<p>Development and optimization of a novel mask-free cost-effective technique for micro/nano-patterning based on electrical micro/nano-discharges compatible with large area manufacturing.&nbsp;&nbsp;&nbsp;</p>\r\n<p>&nbsp;<img style="display: block; margin-left: auto; margin-right: auto;" src="upload/documents/Alicia/para webelectorero_1.jpg" alt="" width="684" height="642" /></p>\r\n<p><strong>CVD graphene and nanographene</strong>&nbsp;on &nbsp;different metal thin films.&nbsp;</p>\r\n<p>Building a home made set-up: &nbsp;CVD + sputtering technique&nbsp;</p>\r\n<p>&nbsp;</p>\r\n<h1><span style="color: #808080; font-size: 18pt;">Related Projects</span></h1>\r\n<p><span lang="ES-TRAD">&ldquo;MATERIALES HIBRIDOS BASADOS EN GRAFENO PARA APLICACIONES EN ENERGIA Y DETECCION OPTICA&rdquo;. Enero 2016- diciembre 2018, &nbsp;<strong>MAT2015-65356-C3-1.</strong></span></p>\r\n<p>&ldquo;<strong>PHAMA 2.0,&nbsp;</strong><span lang="ES-TRAD">Materiales h&iacute;bridos avanzados para aplicaciones fot&oacute;nicas</span>&rdquo; Programa de I + D entre grupos de investigaci&oacute;n de la Comunidad de Madrid. Proyecto concedido. 2015-2018.&nbsp;</p>\r\n<p>&ldquo;Materiales h&iacute;bridos basados en grafeno para aplicaciones optoelectr&oacute;nicas: optimizaci&oacute;n de sus propiedades y procesado de dispositivos de bajo coste&rdquo; ICMM.&nbsp;<strong>MAT2012- 37276-C03-01</strong>&nbsp;&nbsp;</p>\r\n<p>&ldquo;Sistemas de almacenamiento de energ&iacute;a con grafeno para veh&iacute;culos el&eacute;ctricos&rdquo;&nbsp;<strong>Proyecto Repsol-INSPIRE</strong>. UPM-CSIC. Abril 2013 &ndash; diciembre 2015</p>\r\n<p><strong>Graphene Flagship</strong>, Octobre 2013 - . Workpackage Materials&nbsp;</p>\r\n<p>&nbsp;</p>\r\n<p><strong>&nbsp;</strong></p>\r\n<h1><span style="color: #808080; font-size: 18pt;">Selected publications</span></h1>', 1529483687, 1),
(28, 2, '', 'Magnetic semiconductor oxides, transparent conductive oxides.', '', '', 1419940763, 1),
(29, 0, '', 'Graphene and graphene oxide based materials for optoelectronics', '', '<h1><span style="color: #808080;">&nbsp;<span style="font-size: 18pt;">General objectives</span></span></h1>\r\n<p><span style="font-size: 12pt;">Design and fabrication of hybrid materials with optimal symbiosis of organic semiconductors, inorganic nanoparticles and graphene properties.</span>&nbsp;</p>\r\n<p><span style="font-size: 12pt;">Search of new or improved features of the resulting nanostructured hybrid films,</span>&nbsp;</p>\r\n<p><span style="font-size: 12pt;">Applications: transparent electrodes and nanostructured active layers in photovoltaic cells, electroluminescent devices, field effect transistors and sensors.</span>&nbsp;</p>\r\n<h1><span style="color: #808080; font-size: 18pt;">Approach</span></h1>\r\n<p><span style="font-size: 12pt;">Materials design and fabrication + Fundamental study of materials +&nbsp;&nbsp;Device fabrication +&nbsp;&nbsp;Technology development&nbsp;</span>&nbsp;</p>\r\n<div><span style="font-size: 12pt;"><strong>Basic studies</strong></span></div>\r\n<p><span style="font-size: 12pt;">Resonant Raman processes in graphene oxide&nbsp;</span></p>\r\n<p><span style="font-size: 12pt;">Chemical and thermal reduction mechanisms in few layer thin films and bulk graphene oxides.</span></p>\r\n<p><span style="font-size: 12pt;">Stacking of graphene oxide few-layer films and defects produced by thermal and chemcial rediction mechanisms&nbsp;</span></p>\r\n<p><span style="font-size: 12pt;"><strong>Transparent electrodes: &nbsp;</strong>Cheap, green, scalable to large areas, Indium free, on any substrate, in particular&nbsp; flexible &nbsp;&rArr;&nbsp; Graphene oxide (GO)</span></p>\r\n<p><span style="font-size: 12pt;">Optimization of chemically derived few-layer graphene films for transparent electrodes with doping control</span></p>\r\n<p><span style="font-size: 12pt;">Hybrid graphene based materials: chemically derived graphene thin films or CVD graphene with metallic, semiconductor or oxide nanoparticles.</span>&nbsp;</p>\r\n<p><strong><span style="font-size: 12pt;">Graphene patterning and nanostructuring - graphene quantum dots&nbsp;</span></strong></p>\r\n<p><span style="font-size: 12pt;">&nbsp;Large scale patterning of GO and G films for integration in devices,&nbsp;&nbsp;Nano-Graphene-GQDs</span></p>\r\n<p><span style="font-size: 12pt;">Development and optimization of a novel mask-free cost-effective technique for micro/nano-patterning based on electrical micro/nano-discharges compatible with large area manufacturing.</span>&nbsp;&nbsp;&nbsp;</p>\r\n<p><span style="font-size: 12pt;"><strong>CVD graphene and nanographene</strong> on &nbsp;different metal thin films.&nbsp;</span></p>\r\n<p><span style="font-size: 12pt;">Building a home made set-up: &nbsp;CVD + sputtering technique</span>&nbsp;</p>\r\n<p>&nbsp;</p>\r\n<h1><span style="color: #808080; font-size: 18pt;">Related Projects:</span></h1>\r\n<p>&nbsp;</p>\r\n<p><span lang="ES-TRAD">&ldquo;MATERIALES HIBRIDOS BASADOS EN GRAFENO PARA APLICACIONES EN ENERGIA Y DETECCION OPTICA&rdquo;. Enero 2016- diciembre 2018, &nbsp;<strong>MAT2015-65356-C3-1.</strong></span></p>\r\n<p>&nbsp;&ldquo;<strong>PHAMA 2.0,&nbsp;</strong><span lang="ES-TRAD">Materiales h&iacute;bridos avanzados para aplicaciones fot&oacute;nicas</span>&rdquo; Programa de I + D entre grupos de investigaci&oacute;n de la Comunidad de Madrid. Proyecto concedido. 2015-2018.&nbsp;</p>\r\n<p>&nbsp;&ldquo;Materiales h&iacute;bridos basados en grafeno para aplicaciones optoelectr&oacute;nicas: optimizaci&oacute;n de sus propiedades y procesado de dispositivos de bajo coste&rdquo; ICMM.&nbsp;<strong>MAT2012- 37276-C03-01</strong>&nbsp;&nbsp;</p>\r\n<p><span style="font-size: 12pt;">&ldquo;Sistemas de almacenamiento de energ&iacute;a con grafeno para veh&iacute;culos el&eacute;ctricos&rdquo;&nbsp;<strong>Proyecto Repsol-INSPIRE</strong>. UPM-CSIC. Abril 2013 &ndash; diciembre 2015</span></p>\r\n<p><span style="font-size: 12pt;"><strong>Graphene Flagship</strong>, Octoubre 2013. Workpackage Materials&nbsp;</span></p>\r\n<h1><span style="font-size: 18pt; color: #808080;">&nbsp;Publications:</span></h1>', 1456322285, 1),
(30, 5, '', 'Local order of advanced magnetic materials by XAS', '', '', 1457687380, 1),
(31, 4, '', 'proton', '', '<p>a</p>', 1398439339, 0),
(32, 4, '', 'neutron', '', '<p>a</p>', 1398439338, 0),
(33, 4, '', 'ffff', '', '<p>fff</p>', 1398864746, 0),
(34, 5, '', 'Graphene-nanostructure hybrid materials for advanced sensing applications', '', '<p><span lang="EN-US">Combination of metallic nanostructures with graphene is envisioned to modify with accuracy and to confer extra functionality to the already extraordinary properties of graphene. Physical vapor deposition methods, such as magnetron sputtering or gas-phase aggregation techniques, are reliable methods to incorporate functional nanostructures. The gradual manipulation of the optical and electric properties in these hybrid materials is anticipated to give insight into the development of tunable touch, chemical and biosensors&nbsp;and other advanced electronic devices.</span></p>\r\n<p>&nbsp;</p>', 1465225613, 1),
(35, 5, '', 'XAS analysis in functional oxides and complex metal-organic molecules', '', '', 1457687377, 1);

