作者: H. Ma , L. Chen
DOI: 10.1016/J.COMMATSCI.2008.01.022
关键词:
摘要: Abstract A nonlinear phenomenological theory was described for the epitaxial BiFeO3 (BFO) thin films with single domain structure. With consideration of mechanical substrate effect, “misfit strain–temperature” phase diagram is constructed BFO film by numerical calculations. It found that polarization instabilities result in formation new states forbidden bulk crystals, which has been observed experiments.