Extracting uniaxial anisotropy of ferromagnetic layer in exchange-biased system

被引：5
|
作者：
Jiang, Changjun [1 ]
Xue, Desheng [1 ]
Sui, Wenbo [1 ]
机构：
[1] Lanzhou Univ, Key Lab Magnetism & Magnet Mat MOE, Lanzhou 730000, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2010年 / 322卷 / 22期
基金：
中国国家自然科学基金;
关键词：
Exchange bias; Uniaxial anisotropy; High-frequency permeability; PERMEABILITY;
D O I：
10.1016/j.jmmm.2010.07.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effective anisotropy of the ferromagnetic pinned layer of ferro(FM)-antiferromagnetic (AF)-coupled NiFe(FM)/FeMn(AF) exchange-biased system was investigated in a broad frequency range (100 MHz5 GHz) using a complex permeability spectrum. The exchange bias and effective uniaxial anisotropy fields of the thin film have been computed theoretically using the LandauLifschitzGilbert (LLG) equation. From the measurements, uniaxial anisotropy of the pinned FM layer has been extracted to understand the nature of the exchange bias in the system. It is found that the uniaxial anisotropy field of NiFe layer when exchange biased with the AF layer increases from 5 to 15 Oe at different external magnetic fields. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：3676 / 3679
页数：4
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