Al-doping-induced magnetocapacitance in the multiferroic AgCrS2

doi:10.1088/1674-1056/24/12/127507

Abstract

In this paper, multiferroics and magnetocapacitive effect of triangular-lattice antiferromagnet AgAl_0.02Cr_0.98S₂ 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.

Keywords: AgCrS₂ multiferroics magnetocapacitive effect antiferromagnet ferroelectricity magnetoelectric coupling dielectric constant AgAl_0.02Cr_0.98S₂

Received: 12 August 2015
Revised: 09 October 2015
Accepted manuscript online:

PACS:	75.80.+q	(Magnetomechanical effects, magnetostriction)
	77.22.-d	(Dielectric properties of solids and liquids)
	75.85.+t	(Magnetoelectric effects, multiferroics)
	75.50.Ee	(Antiferromagnetics)

Fund:

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

Corresponding Authors: Liu Rong-Deng, Wang Fang-Wei
E-mail: liurd104@163.com;fwwang@aphy.iphy.ac.cn

Cite this article:

Liu Rong-Deng (刘荣灯), He Lun-Hua (何伦华), Yan Li-Qin (闫丽琴), Wang Zhi-Cui (王志翠), Sun Yang (孙阳), Liu Yun-Tao (刘蕴韬), Chen Dong-Feng (陈东风), Zhang Sen (张森), Zhao Yong-Gang (赵永刚), Wang Fang-Wei (王芳卫) Al-doping-induced magnetocapacitance in the multiferroic AgCrS₂ 2015 Chin. Phys. B 24 127507

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Al-doping-induced magnetocapacitance in the multiferroic AgCrS2

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Al-doping-induced magnetocapacitance in the multiferroic AgCrS₂