钙钛矿结构RFeO3晶体研究进展  

Research Progress on Perovskite RFeO3 Crystal

作　　者：蒋国超 申慧 徐家跃 武安华[2] JIANG Guochao;SHEN Hui;XU Jiayue;WU Anhua(School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China;State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China)

机构地区：[1]上海应用技术大学材料科学与工程学院,上海201418 [2]中国科学院上海硅酸盐研究所,上海201899 [3]山东大学,晶体材料国家重点实验室,济南250100

出　　处：《人工晶体学报》2020年第6期990-996,共7页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51972213,51872309,U1832106);晶体材料国家重点实验室开放课题(KF18010)。

摘　　要：稀土正铁氧体RFeO3晶体是一类重要的多功能磁性材料,稳定的正交结构RFeO3晶体具有丰富的磁性,优异的磁光和光磁特性,在磁光和光磁调控方面取得一系列重要研究进展。另外,正交相DyFeO3和GdFeO3等晶体由于R3+与Fe3+交换收缩作用,在极低温度下表现出磁电耦合特性。相比较而言,近年来涌现出的六方相RFeO3晶体被报道具有室温磁电耦合特性,受到国内外广泛关注。由于六方相RFeO3晶体属于亚稳态,晶体生长有一定的难度。本文主要综述了正交相RFeO3晶体和六方相RFeO3晶体的生长、磁光、光磁和磁电耦合特性,为该体系晶体的结构设计、材料制备和性能研究提供参考。Rare-earth orthoferrite RFeO3 crystals are important multifunctional magnetic materials.Orthorhombic RFeO3 crystals display various interesting properties,like exotic magnetic behavior,excellent magneto-optical and opto-magnetic properties.The regulation of the magneto-optical and opto-magnetic properties were intensively studied in this system.In addition,orthorhombic DyFeO3 and GdFeO3 crystals exhibit magnetoelectric coupling characteristics at extremely low temperature,due to the exchange striction between R3+and Fe3+.In recent years,novel hexagonal RFeO3 crystal has been reported to show multiferroic behavior at room temperature.The crystal growth of hexagonal RFeO3 is relatively difficult,due to its metastable state.In this paper,the crystal growth,magneto-optical,opto-magnetic and magneto-electric coupling characteristics of orthorhombic and hexagonal RFeO3 crystals are systematically reviewed,which provide valuable reference for the research of RFeO3 crystals in the future.

关 键 词：钙钛矿 正交相RFeO3晶体 六方相RFeO3晶体 磁性材料 

分 类 号：O78[理学—晶体学]