Temperature dependence of static and dynamic magnetic properties in NiFe/IrMn bilayer system

被引：3

作者：

Abdulahad, Faris Basheer ^{[1
,2
,3
]}

Hung, Dung-Shing ^{[4
]}

Lee, Shang-Fan ^{[1
,2
]}

机构：

[1] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[2] Acad Sinica, TIGP, Nano Sci & Technol Program, Taipei 11529, Taiwan

[3] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 300, Taiwan

[4] Ming Chuan Univ, Dept Informat & Telecommun Engn, Taipei 111, Taiwan

来源：

JOURNAL OF MATERIALS RESEARCH | 2014年 / 29卷 / 11期

关键词：

UNCOMPENSATED ANTIFERROMAGNETIC SPINS; EXCHANGE-BIAS; FERROMAGNETIC-RESONANCE; UNIDIRECTIONAL ANISOTROPY; THICKNESS DEPENDENCE; LAYER THICKNESS; THIN-FILMS; MODEL; MECHANISMS; MAGNETORESISTANCE;

D O I：

10.1557/jmr.2014.108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A systematic experimental study on the exchange bias (EB) effect in a ferromagnet/antiferromagnet bilayer system is performed both in the static (dc) and dynamic (high frequency) timescale to clarify the effects of temperature and antiferromagnetic (AFM) layer thickness on the system's stability and magnetic properties. Our system consists of NiFe/IrMn. Both parallel and perpendicular domain walls are suggested to explain the static EB and coercivity behaviors. In the microwave region, peaks, which can only be suppressed at high temperatures with strong external fields, were observed in the AFM thickness dependencies of the dynamic effective field and resonance frequency. The temperature dependence of both static and dynamic parameters suggests different values of Neel temperatures. The dynamic results show a rotatable anisotropy contribution, which has a peak value at the blocking temperature and vanishes at the dynamic Neel temperature.

引用

页码：1237 / 1247

页数：11

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