A three-dimensional phenomenological model is proposed to describe both ferroelectricity and antiferroelectricity based on the Ginzburg-Landau-Devonshire theory. Its application to the multiferroic Sm-doped BiFeO3 system describes the temperature-, pressure-, and composition-induced ferroelectric to antiferroelectric phase transitions. The constructed temperature-composition and temperature-pressure phase diagrams show that compressive hydrostatic pressure and Sm doping have similar effects on the ferroelectric and antiferroelectric phase transitions. It is also indicated from the temperature-pressure phase diagram that the experimentally observed phase of BiFeO3 under the hydrostatic pressure from 3 GPa to 10 GPa is a PbZrO3-like antiferroelectric phase.
F. Xue et al., "Composition- and Pressure-Induced Ferroelectric to Antiferroelectric Phase Transitions in Sm-Doped BiFeO₃ System," Applied Physics Letters, vol. 106, no. 1, American Institute of Physics (AIP), Jan 2015.
The definitive version is available at https://doi.org/10.1063/1.4905444
Materials Science and Engineering
Keywords and Phrases
Antiferroelectricity; Ferroelectricity; Hydraulics; Hydrostatic pressure, Anti ferroelectrics; Antiferroelectric phase transition; Ferroelectricity and antiferroelectricity; Ginzburg-Landau; ITS applications; Phenomenological modeling; Pressure phase; Temperature composition, Phase diagrams
International Standard Serial Number (ISSN)
Article - Journal
© 2015 American Institute of Physics (AIP), All rights reserved.
01 Jan 2015