Annealing-Dependent Morphotropic Phase Boundary in the BiMg_0.5Ti_0.5O₃-BiZn_0.5Ti_0.5O₃ Perovskite System.

ABSTRACT: The annealing behavior of (1-x)BiMg_0.5Ti_0.5O₃-xBiZn_0.5Ti_0.5O₃ [(1-x)BMT-xBZT] perovskite solid solutions synthesized under high pressure was studied in situ via X-ray diffraction and piezoresponse force microscopy. The as prepared ceramics show a morphotropic phase boundary (MPB) between the non-polar orthorhombic and ferroelectric tetragonal states at 75 mol. % BZT. It is shown that annealing above 573 K results in irreversible changes in the phase diagram. Namely, for compositions with 0.2 < x < 0.6, the initial orthorhombic phase transforms into a ferroelectric rhombohedral phase. The new MPB between the rhombohedral and tetragonal phases lies at a lower BZT content of 60 mol. %. T

SUBMITTER: Cardoso JPV 

PROVIDER: S-EPMC9570801 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature