Dependence of exchange bias on core/shell relative dimension in ferromagnetic/antiferromagnetic nanoparticles

被引：16

作者：

Hu, Yong ^{[1
]}

Liu, Yan ^{[1
]}

Du, An ^{[1
]}

Shi, Feng ^{[2
]}

机构：

[1] Northeastern Univ, Coll Sci, Shenyang 110819, Peoples R China

[2] Auburn Univ, Dept Phys, Auburn, AL 36849 USA

来源：

PHYSICS LETTERS A | 2014年 / 378卷 / 22-23期

基金：

中国国家自然科学基金;

关键词：

Nanoparticle; Exchange bias; Microscopic spin configuration; Monte Carlo simulation; MONTE-CARLO-SIMULATION; ANISOTROPY; BILAYERS; IRON;

D O I：

10.1016/j.physleta.2014.04.015

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We employ a modified Metropolis Monte Carlo simulation to study the effect of bimagnetic core/shell relative dimension on exchange bias in ferromagnetic/antiferromagnetic nanoparticles. The exchange bias field is inversely proportional to the ferromagnetic shell thickness in the antiferromagnetic (core)/ferromagnetic (shell) nanoparticles, while in the nanoparticles with an opposite core/shell structure the exchange bias behavior is complex and distinguished in different ranges of the ferromagnetic core radius. The work elucidates unambiguously how the core and shell dimensions optimize the exchange bias in nanoparticles. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1667 / 1674

页数：8

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