Progress and prospect for high temperature single-phased magnetic ferroelectrics  

作　　者：YU Jian CHU JunHao 

机构地区：[1]Functional Materials Research Laboratory, Tongji University, Shanghai 200092, China [2]National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China

出　　处：《Chinese Science Bulletin》2008年第14期2097-2112,共16页

基　　金：supported by the National Natural Science Foundation of China (Grant No. 10304021);National Basic Research Program of China (Grant No. 2007CB924900);Foundation for the Author of National Excellent Doctoral Dissertation of China (FANEDD-200744);Shanghai Pujiang Program (Grant No. 07pj14087);Program for New Century Excellent Talents in University (NCET-07-0624)

摘　　要：Magnetic ferroelectrics are one of the most important functional materials. The present bottleneck lim- iting applications of them is lacking of high-temperature single-phased ferromagnetic-ferroelectric multiferroics with strong magnetoelectric coupling effect. Here, those progresses of the mechanism for coexistence of ferroelectric and magnetic order, experimental and theoretical studies on single-phased magnetic ferroelectrics, and the relationship between magnetic structure and crystal symmetry are summarized. With examples of BiFeO3, BiMnO3 and Bi2FeCrO6, the difficulties encountered in this field are analyzed. At last, some prospects to develop high-temperature single-phased ferromagnetic-ferro- electric multiferroics are also presented.Magnetic ferroelectrics are one of the most important functional materials. The present bottleneck limiting applications of them is lacking of high-temperature single-phased ferromagnetic-ferroelectric multiferroics with strong magnetoelectric coupling effect. Here, those progresses of the mechanism for coexistence of ferroelectric and magnetic order, experimental and theoretical studies on single-phased magnetic ferroelectrics, and the relationship between magnetic structure and crystal symmetry are summarized. With examples of BiFeO3, BiMnO3 and Bi2FeCrO6, the difficulties encountered in this field are analyzed. At last, some prospects to develop high-temperature single-phased ferromagnetic-ferroelectric multiferroics are also presented.

关 键 词：磁电效应 单相位复合物 磁铁电质 高温条件 BIFEO3 BiMnO3 Bi2CrFeO6 

分 类 号：O441[理学—电磁学] TB383[理学—物理]