Ca_(3)Ti_(2)O_(7)杂化非本征铁电体的制备及其掺杂改性研究进展  

Progress on preparation and doping modification of Ca_(3)Ti_(2)O_(7) hybrid improper ferroelectrics

作　　者：陈大凯 蔡苇 周创 吴红迪 符春林[1,2] CHEN Dakai;CAI Wei;ZHOU Chuang;WU Hongdi;FU Chunlin(School of Metallurgy and Materials Engineering,Chongqing University of Science and Technology,Chongqing 401331,China;Chongqing Key Laboratory of Nano/Micro Composite Materials and Device,Chongqing 401331,China)

机构地区：[1]重庆科技学院冶金与材料工程学院,重庆401331 [2]纳微复合材料与器件重庆市重点实验室,重庆401331

出　　处：《电子元件与材料》2021年第10期983-989,1027,共8页Electronic Components And Materials

基　　金：重庆市高校创新研究群体项目(CXQT19031);重庆市科技创新领军人才支持计划(CSTCCXLJRC201919);重庆市留学人员回国创业创新支持计划(cx2019159);重庆市自然科学基金面上项目(cstc2020jcyj-msxmX0030);重庆科技学院研究生科技创新计划项目(YKJCX2020220)。

摘　　要：具有R-P层状钙钛矿结构的Ca_(3)Ti_(2)O_(7)材料具有由氧八面体面内旋转和面外倾侧引起的杂化非本征铁电性,因其有望打破铁电性与磁性电子构型互斥的关系,实现室温强磁电耦合而受到广泛关注。综述了近年Ca_(3)Ti_(2)O_(7)杂化非本征铁电体的制备方法、工艺及其掺杂改性的最新进展,重点阐述并总结了A位、B位掺杂及A/B位共掺对Ca_(3)Ti_(2)O_(7)材料杂化非本征铁电性的影响规律及改性机理,并对Ca_(3)Ti_(2)O_(7)材料的未来研究方向进行了展望。Ca_(3)Ti_(2)O_(7)materials with R-P layered perovskite structure has the hybrid improper ferroelectricity caused by inplane rotation and out-of-plane tilt of oxygen octahedron.It has been widely concerned because it is expected to break through the relationship between ferroelectricity and the electron configuration of magnetism and achieve strong magnetoelectric coupling at room temperature.The progress on the preparation method and doping of Ca_(3)Ti_(2)O_(7)hybrid improper ferroelectrics in recent years is reviewed.The influences and mechanism of A-site doping,B-site doping and A/B-sites co-doping on the hybrid improper ferroelectricity of Ca_(3)Ti_(2)O_(7)materials are emphatically described and summarized,and the future research on Ca_(3)Ti_(2)O_(7)materials is also prospected.

关 键 词：Ca_(3)Ti_(2)O_(7) 杂化非本征铁电性 综述 掺杂 氧八面体 

分 类 号：TM22[一般工业技术—材料科学与工程]