Al-doping-induced magnetocapacitance in the multiferroic CuCrS2

doi:10.1088/1674-1056/22/2/027507

中国物理B ›› 2013, Vol. 22 ›› Issue (2): 27507-027507.doi: 10.1088/1674-1056/22/2/027507

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Al-doping-induced magnetocapacitance in the multiferroic CuCrS₂

刘荣灯^{a b}, 刘蕴韬^a, 陈东风^a, 何伦华^b, 闫丽琴^b, 王志翠^b, 孙阳^b, 王芳卫^b

a China Institute of Atomic Energy, Beijing 102413, China;
b State Key Laboratory of Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2012-05-14 修回日期:2012-09-06 出版日期:2013-01-01 发布日期:2013-01-01
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2010CB833102) and the National Natural Science Foundation of China (Grant No. 10974244).

Al-doping-induced magnetocapacitance in the multiferroic CuCrS₂

Liu Rong-Deng (刘荣灯)^{a b}, Liu Yun-Tao (刘蕴韬)^a, Chen Dong-Feng (陈东风)^a, He Lun-Hua (何伦华)^b, Yan Li-Qin (闫丽琴)^b, Wang Zhi-Cui (王志翠)^b, Sun Yang (孙阳)^b, Wang Fang-Wei (王芳卫)^b

a China Institute of Atomic Energy, Beijing 102413, China;
b State Key Laboratory of Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Received:2012-05-14 Revised:2012-09-06 Online:2013-01-01 Published:2013-01-01
Contact: Wang Fang-Wei E-mail:fwwang@aphy.iphy.ac.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2010CB833102) and the National Natural Science Foundation of China (Grant No. 10974244).

摘要/Abstract

摘要： In this paper, magnetic and dielectric properties of the quasi-two-dimensional triangular-lattice system CuCrS₂ and its B-site-diluted analogs CuAl_1-xCr_xS₂ (x=0.01 and x=0.02) are investigated. Antiferromagnetic phase transition is observed at about 38.5 K by magnetization measurement without shift induced by a small amount of dopping Al. Magnetodielectric effect is found near T_N in each of the three compounds. The dielectric constant decreases and the magnetocapacitance increases with the increase of substitution of nonmagnetic Al³⁺ ions for the magnetic Cr³⁺ ions. The negative magnetocapacitive effect reaches ～13% for CuAl_0.02Cr_0.98S₂.

关键词: magnetocapacitance, dielectric property, magnetoelectric coupling, antiferromagnetics

Abstract: In this paper, magnetic and dielectric properties of the quasi-two-dimensional triangular-lattice system CuCrS₂ and its B-site-diluted analogs CuAl_1-xCr_xS₂ (x=0.01 and x=0.02) are investigated. Antiferromagnetic phase transition is observed at about 38.5 K by magnetization measurement without shift induced by a small amount of dopping Al. Magnetodielectric effect is found near T_N in each of the three compounds. The dielectric constant decreases and the magnetocapacitance increases with the increase of substitution of nonmagnetic Al³⁺ ions for the magnetic Cr³⁺ ions. The negative magnetocapacitive effect reaches ～13% for CuAl_0.02Cr_0.98S₂.

Key words: magnetocapacitance, dielectric property, magnetoelectric coupling, antiferromagnetics

中图分类号: (Magnetomechanical effects, magnetostriction)

75.80.+q

77.22.-d (Dielectric properties of solids and liquids) 75.85.+t (Magnetoelectric effects, multiferroics) 75.50.Ee (Antiferromagnetics)

刘荣灯, 刘蕴韬, 陈东风, 何伦华, 闫丽琴, 王志翠, 孙阳, 王芳卫. Al-doping-induced magnetocapacitance in the multiferroic CuCrS₂[J]. 中国物理B, 2013, 22(2): 27507-027507.

Liu Rong-Deng (刘荣灯), Liu Yun-Tao (刘蕴韬), Chen Dong-Feng (陈东风), He Lun-Hua (何伦华), Yan Li-Qin (闫丽琴), Wang Zhi-Cui (王志翠), Sun Yang (孙阳), Wang Fang-Wei (王芳卫). Al-doping-induced magnetocapacitance in the multiferroic CuCrS₂[J]. Chin. Phys. B, 2013, 22(2): 27507-027507.

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Al-doping-induced magnetocapacitance in the multiferroic CuCrS₂

Al-doping-induced magnetocapacitance in the multiferroic CuCrS₂

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