Exchange bias effect modified asymmetric magnetization reversal in Ni/YMnO3 multiferroic bilayers

被引：2

作者：

Gong, Junlu ^{[1
]}

Zheng, Dongxing ^{[1
]}

Li, Dong ^{[1
]}

Jin, Chao ^{[1
]}

Li, Peng ^{[1
]}

Feng, Liefeng ^{[1
]}

Bai, Haili ^{[1
]}

机构：

[1] Tianjin Univ, Inst Adv Mat Phys, Tianjin Key Lab Low Dimens Mat Phys & Preparat Te, Fac Sci, Tianjin 300072, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2016年 / 368卷

基金：

中国国家自然科学基金;

关键词：

Exchange bias; Magnetization reversal; Anisotropic magnetoresistance; ANISOTROPY; MAGNETORESISTANCE; SYSTEMS; YMNO3;

D O I：

10.1016/j.apsusc.2016.01.222

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Exchange bias (EB) effect modified asymmetric magnetization reversal in Ni/YMnO3 multiferroic bilayers was investigated by combining anisotropic magnetoresistance (AMR) with free energy methods. The promotion and inhibition effects of EB field on magnetization rotation result in the asymmetry of magnetization reversal. The AMR curves exhibit shape transition from arc-like to sin(2)theta(H)-dependence with increasing external fields due to the competition between Zeeman energy and interfacial coupling energy. The phase shift and asymmetric behaviors become weak as the EB field decreases. Our work suggests that controlling the EB effect can be an alternative way to manipulate the magnetization reversal in exchange biased systems. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：44 / 48

页数：5

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