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5 (a, b) (Ca,Sr)3Ti2O7单晶的a0a0c+aac0两个氧八面体倾转模式的示意图; (c, d) Ca2.46Sr0.54Ti2O7单晶的(c) (001)解理表面照片和(d)室温环形差分干涉衬度照片; (e) Ca3−xSrxTi2O7(x=0, 0.54, 0.85)单晶沿[110]方向的电滞回线; (f) IP-PFM的配置示意图[49]
Fig. 5 (a, b) Schematic diagrams of two octahedral tilt modes of a0a0c+and aac0 of (Ca,Sr)3Ti2O7 single crystal; (c) Photographic and (d) circular differential interference contrast image of a cleaved (001) surface of Ca2.46Sr0.54Ti2O7 single crystal; (e) Ferroelectric hysteresis loops of Ca3−xSrxTi2O7 (x=0, 0.54, 0.85) single crystal along [110] orientation; (f) Schematic picture of IP-PFM measurement[49]