Numerical study of exchange bias in antiferromagnetic/ferromagnetic core/shell nanoparticles with non-magnetic defects

被引：3
|
作者：
Vatansever, Z. D. [1 ]
机构：
[1] Dokuz Eylul Univ, Dept Phys, TR-35160 Izmir, Turkey
来源：
PHYSICS LETTERS A | 2018年 / 382卷 / 36期
关键词：
Core/shell magnetic nanoparticles; Exchange bias; Monte Carlo simulation; RANDOM-FIELD MODEL; MAGNETIC-ANISOTROPY; FEO/FE3O4; NANOPARTICLES; SHELL; MECHANISM;
D O I：
10.1016/j.physleta.2018.07.001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We perform Monte Carlo simulations for an antiferromagnetic/ferromagnetic core/shell nanoparticle with a doubly inverted structure. We investigate the dependence of the exchange bias field and coercivity on the magnetic dilution of the shell-interface and shell part. It is demonstrated that exchange bias and coercivity can exhibit monotonic or non-monotonic behavior depending on the location of the nonmagnetic components. Also, temperature dependence of the exchange bias and coercivity of the system are studied for a particular defect concentration value. Our results provide an alternative way for tunning the magnetic properties of doubly inverted nanoparticles. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：2539 / 2543
页数：5
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