Asymmetry of domain nucleation and enhanced coercivity in exchange-biased epitaxial NiO/NiFe bilayers

被引：130

作者：

Nikitenko, VI ^{[1
]}

Gornakov, VS

Dedukh, LM

Kabanov, YP

Khapikov, AF

Shapiro, AJ

Shull, RD

Chaiken, A

Michel, RP

机构：

[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow District, Russia

[2] NIST, Div Met, Gaithersburg, MD 20899 USA

[3] Univ Calif Lawrence Livermore Natl Lab, Div Mat Sci & Technol, Livermore, CA 94551 USA

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.57.R8111

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetization reversal processes in epitaxial NiO/NiFe bilayers were studied using the magneto-optic indicator film technique. The influence of dislocations on these processes was determined. Remagnetization parallel to the unidirectional anisotropy axis proceeds by domain nucleation and growth, with nucleation center activity being asymmetric with respect to the applied field sign. Magnetization reversal in the hard axis direction occurs by incoherent rotation. The enhanced coercivity and asymmetric nucleation can be explained by taking into account domain wall behavior in the antiferromagnetic layer.

引用

页码：R8111 / R8114

页数：4

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