宁夏大学学报（自然科学版）2024，Vol.45Issue(1)：25-30,6.
BiFeO3外延薄膜的自极化调控
Self-polarization Modulation of BiFeO3 Epitaxial Films
摘要
Abstract
Through the investigation of the substrate/bottom electrode interface behavior,it is discovered that interface effects can modulate the polarization of BiFeO3 epitaxial films.As both the bottom electrode and the film possess perovskite-type structures,by altering the interface layer type and position of the substrate/bottom electrode,two different types of interfaces can be achieved in the BFO/SRO(LSMO)/STO heterostructure.XRD and RSM characterizations indicate that the BFO film grows epitaxially on the STO substrate.Combined with PFM characterization,the two heterostructure films exhibit upward/downward spontaneous polarization(Eb)and c-domain 180°flipping.These research findings reveal differences in charge distribution and the direc-tion of the built-in electric field at the interface of heterostructures caused by different choices of bottom elec-trodes,providing new strategies for modulating the performance of heterostructure devices.关键词
外延薄膜/界面效应/自极化Key words
epitaxial thin film/interface effect/self-polarization分类
通用工业技术引用本文复制引用
沈国阳,梁仁宏,朱丽雯,王支国,舒龙龙..BiFeO3外延薄膜的自极化调控[J].宁夏大学学报（自然科学版）,2024,45(1):25-30,6.基金项目
国家自然科学基金资助项目(51962020,12174174) （51962020,12174174）
