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15 (a)单层R-P结构氧化物的晶体结构[143]; (b) HRTiO4和NaRTiO4的插层结构示意图[139]; (c) AASmTiO4和(d) AAEuTiO4的SHG信号随温度升高的变化曲线, 其中AA为Na(黄色圆圈)和K(紫色圆圈)[141]

Fig. 15 (a) Crystal structure of several oxides with single layer R-P structure[143]; (b) Schematic diagram of the intercalation structure of HRTiO4 and NaRTiO4[139]; (c, d) Temperature dependence of SHG for (c) AASmTiO4 and (d) AAEuTiO4 with AA representing Na (yellow circles) and K (purple circles)[141]