In issue 20 of volume 123 of Journal of Physical Chemistry C you will find our latest results on the multiferroic morphotropic phase boundaries of the BiFeO₃–BiMnO₃–PbTiO₃ ternary system:

Delicate Balance Among Three Ferroic Polymorphic Phases in BiFeO₃-BiMnO₃-PbTiO₃
Fernández-Posada, CM; Castro, A; Pena, O; Algueró, M; Amorín H
Journal of Physical Chemistry C 123, 13063-13073 (2019)