Al-doping-induced magnetocapacitance in the multiferroic AgCrS_2  

作　　者：刘荣灯 何伦华 闫丽琴 王志翠 孙阳 刘蕴韬 陈东风 张森 赵永刚 王芳卫 

机构地区：[1]State Key Laboratory of Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics,Chinese Academy of Sciences [2]China Institute of Atomic Energy [3]Department of Physics, Tsinghua University

出　　处：《Chinese Physics B》2015年第12期545-548,共4页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant No.2010CB833102);the National Natural Science Foundation of China(Grant Nos.10974244;11274369;and 11104337)

摘　　要：In this paper, multiferroics and magnetocapacitive effect of triangular-lattice antiferromagnet Ag Al0.02Cr0.98S2 are investigated by magnetic, ferroelectric, pyroelectric current and dielectric measurement. We find that it is a multiferroic material and the magnetocapacitive effect reaches a factor of up to 90 in an external field of 7 T. The results imply the further possibility of synthesizing the magnetocapacitive materials by modifying the frustrated spin structure in terms of a few B-site doping nonmagnetic ions.In this paper, multiferroics and magnetocapacitive effect of triangular-lattice antiferromagnet Ag Al0.02Cr0.98S2 are investigated by magnetic, ferroelectric, pyroelectric current and dielectric measurement. We find that it is a multiferroic material and the magnetocapacitive effect reaches a factor of up to 90 in an external field of 7 T. The results imply the further possibility of synthesizing the magnetocapacitive materials by modifying the frustrated spin structure in terms of a few B-site doping nonmagnetic ions.

关 键 词：AgCrS2 MULTIFERROICS magnetocapacitive effect ANTIFERROMAGNET FERROELECTRICITY magnetoelectric coupling dielectric constant AgAl0.02Cr0.98S2 

分 类 号：O469[理学—凝聚态物理]