Ruddlesden-Popper结构杂化非常规铁电体的研究进展

张碧辉, 刘小强, 陈湘明

Recent Progress of Hybrid Improper Ferroelectrics with Ruddlesden-Popper Structure

ZHANG Bihui, LIU Xiaoqiang, CHEN Xiangming

图4 (a) A3B2O7 R-P型氧化物的铁电a−a−c+结构; (b) A3B2O7的氧八面体倾转的第一性原理振幅和诱导极性模式(按ABO3结构τ递增排列)[26]

Fig. 4 (a) Ferroelectric a−a−c+ structure of A3B2O7 R-P phase; (b) First principles amplitudes of two octahedral rotations and induced polar mode for a suite of A3B2O7 materials, arranged by increasing τ of ABO3 parent[26]