{"id":15,"date":"2016-03-18T08:56:32","date_gmt":"2016-03-18T08:56:32","guid":{"rendered":"http:\/\/www.icmm.csic.es\/gffm\/?page_id=15"},"modified":"2024-09-05T18:45:42","modified_gmt":"2024-09-05T18:45:42","slug":"expertise","status":"publish","type":"page","link":"https:\/\/wp.icmm.csic.es\/gffm\/expertise\/","title":{"rendered":"Expertise"},"content":{"rendered":"\n\n\n
\n

Processing<\/strong><\/a><\/b><\/p>\n<\/td>\n

\n

Crystal structure<\/strong><\/a><\/b><\/p>\n<\/td>\n

\n

Microstructure<\/a><\/b><\/p>\n<\/td>\n

\n

Mechanical<\/a><\/b><\/p>\n<\/td>\n

\n

Piezoelectric<\/a><\/b><\/p>\n<\/td>\n

\n

Die-, Ferro- and Pyroelectric<\/a><\/b><\/p>\n<\/td>\n

 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The members of the group have expertise and facilities at ICMM, and at collaborating institutions, to work with the following techniques:<\/p>\n

<\/a><\/p>\n

Processing<\/strong><\/span><\/h2>\n

of piezoelectric ceramics with controlled microstructures (milling of precursors, sol-gel, Pechini, pressing powders, electrical furnaces for sintering in air and hot-pressing (up to 1000 \u00baC and 100 MPa), laboratory for cutting (diamong saw and hollow diamond drill bits), polishing and electroding ceramic samples and for electrical poling of the samples (HV supplies and silicone oil bath and HV sampleholders; Berlincourt d33-meter))
\nSee examples in:
\nA. Reyes-Montero, L. Pardo, R. L\u00f3pez-Ju\u00e1rez, A.M. Gonz\u00e1lez, S.O. Rea-L\u00f3pez, M.P. Cruz and M.E. Villafuerte- Castrej\u00f3n Sub-10\u00b5m grain size Ba1-x<\/sub>Cax<\/sub>Ti0.9<\/sub>Zr0.1<\/sub>O3<\/sub>(x=0.10 and 0.15) piezoceramics processed using a reduced thermal treatment <\/a>Smart Materials and Structures 24, 065033 (2015)
\nL. Pardo, A. Garcia, K. Breb\u00f8l, E. Mercadelli and C. Galassi
\nPiezoelectric properties of lead-free submicron-structured (Bi0.5<\/sub>Na0.5<\/sub>)0.94<\/sub>Ba0.06<\/sub>TiO3<\/sub> ceramics from nanopowders <\/a>Smart Mater. Struct. 19, 115007 (2010)<\/p>\n

<\/a><\/p>\n

Crystal structure<\/strong><\/span><\/h2>\n

determination of piezoceramics by both conventional and synchrotron (SSRF(USA) and Elettra (IT)) X-ray diffraction, under in-situ applied electric-field.
\nSee examples in:
\nL.E. Fuentes-Cobas, M.E. Montero-Cabrera, L. Pardo and L. Fuentes-Montero
\nFerro-piezoelectrics under the synchrotron light: a review<\/a> Materials, 9(1), 14(34pp) (2016)
\nA.M. Gonzalez, L. Pardo, M.E. Montero-Cabrera and L.E. Fuentes-Cobas
\nAnalysis of the rhombohedral and tetragonal symmetries coexistence in lead-free 0.94(Bi0.5<\/sub>Na0.5<\/sub>)TiO3<\/sub> \u2013 0.06 BaTiO3<\/sub> ceramics from nanopowders <\/a>Advances in Applied Ceramics Structural, Functional and Bioceramics 115(2), 96-105 (2016)<\/p>\n

<\/a><\/p>\n

Microstructure<\/strong><\/span><\/h2>\n

determination of piezoceramics by computer assisted (software MIP45) quantitative microscopy (SEM or optical (Laborlux 12 ME ST with light source and digital camera)).
\nSee details and applications of the technique in the processing optimization:
\nL. Pardo, A. Garc\u00eda, K. Breb\u00f8l, E. Mercadelli and C. Galassi
\nEnhanced properties for ultrasonic transduction, phase transitions and thermal depoling in 0.96(Bi0.5<\/sub>Na0.5<\/sub>)TiO3<\/sub>-0.04BaTiO3<\/sub> submicron structured ceramic <\/a>J. Phys. D: Appl. Phys 44, 335404 (2011)
\nA. Moure, T. Hungr\u00eda, A. Castro, L. Pardo
\nQuantitative Microstructural Analysis and Piezoelectricity of Highly Dense, Submicron-Structured NaNbO3<\/sub> Ceramics from Mechanically Activated Precursors <\/a>J. Eur. Cer. Soc. 29, 2297-2308 (2009)<\/p>\n

<\/a><\/p>\n

Mechanical<\/strong><\/span><\/h2>\n

properties study by indentation techniques (micro- and nano-hardness tester (NHT) (CSM instruments), the latter in-house modified for in-situ applied electric-field and vice-versa electrical measurements under a mechanical load. See at:
\nD. Rivero, A. Garc\u00eda and L. Pardo
\nModification of a Commercial Nanoindentation System for Measurement of Hysteresis Cycles Under Mechanical Load in Polycrystalline Ferroelectric Films <\/a>Bol. Soc. Esp. Ceram. Vidr. 51<\/u> (1), 12-19 (2012)<\/p>\n

<\/a><\/p>\n

Piezoelectric<\/strong><\/span><\/h2>\n

properties study by in-house developed software for determination of piezoelectric, dielectric and elastic complex coefficients<\/a> in the linear range from the electromechanical resonance modes of poled ferroelectric ceramics by complex impedance measurements (HP4194A (1kHz-40MHz), HP4192A(5Hz-13MHz) and HP4191A RF (1-1000MHz) up to T>500\u00baC.
\nSee the use in the matrix characterization for reliable and accurate FEM <\/strong><\/span> of ceramic resonators in,
\nL. Pardo, F. Montero de Espinosa, A. Garc\u00eda and K. Brebol
\nChoosing the best geometries for the linear characterization of lossy piezoceramics: Study of the thickness poled shear plate <\/a>Applied Physics Letters 92 , 172907 (2008).
\nSee the use for study of ferroelectric-relaxor or ferro-antiferroelectric phase transitions<\/strong><\/span> in,
\nL. Pardo, A. Garc\u00eda, K. Breb\u00f8l, E. Mercadeli and C. Galassi
\nCharacterization of Nanostructured Phases and Peculiar Phase Transitions in BNBT Lead-Free Piezoceramics<\/a> Advances in Science and Technology, 90, 12-18(2014)
\nA. Moure, T. Hungria, A. Castro and L. Pardo
\nMicrostructural effects on the phase transitions and the thermal evolution of elastic and piezoelectric properties in highly dense, submicron structured NaNbO3<\/sub> ceramics <\/a>Journal of Materials Science 45, 1211\u20131219 (2010)<\/p>\n

<\/a><\/p>\n

Dielectric, Ferroelectric and Pyroelectric <\/strong><\/span><\/h2>\n

properties study at the electrical measurements lab for the macroscopic characterization of ceramics, including bipolar programable Amplifier Kepco BOP 1000M, oscilloscope Tektronics TDS520\/A1, Agilent programmable waveform generators, electrometers, probe stations (cryogenic, high-temperature), etc.
\nF. L. Mart\u00ednez, J. Hinojosa, G. Domenech, F. Luque, J. Zapata, R Ruiz and L. Pardo.
\nDielectric Constant Tunability at Microwave Frequencies and Pyroelectric Behavior of Lead-Free Submicron-Structured (Bi0.5<\/sub>Na0.5<\/sub>)1-x<\/sub>Bax<\/sub>TiO3<\/sub> Ferroelectric <\/a>Trans. IEEE UFFC 60<\/u> (8), 1595 (2013)
\nL. Pardo, E. Mercadelli, A. Garc\u00eda, K. Breb\u00f8l and C. Galassi.
\nField-Induced Phase Transition and Relaxor Character in Submicron Structured Lead-Free (Bi0.5<\/sub>Na0.5<\/sub>)0.06<\/sub>Ba0.94<\/sub>TiO3<\/sub> Piezoceramics at the Morphotropic Phase Boundary <\/a> IEEE Trans. UFFC, 58(9), 1893-1904 (2011)<\/p>\n

Members also have access to other techniques and scientific services<\/a> of the ICMM.<\/p>\n","protected":false},"excerpt":{"rendered":"

Processing Crystal structure Microstructure Mechanical Piezoelectric Die-, Ferro- and Pyroelectric   The members of the group have expertise and facilities at ICMM, and at collaborating institutions, to work with the following techniques: Processing of piezoelectric ceramics with controlled microstructures (milling of precursors, sol-gel, Pechini, pressing powders, electrical furnaces for sintering\u2026<\/p>\n

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