Initialization of unidirectional anisotropy in a ferromagnet-antiferromagnet bilayer by keV-He ion bombardment

被引：21

作者：

Engel, D

Ehresmann, A

Schmalhorst, J

Sacher, M

Höink, V

Reiss, G

机构：

[1] Tech Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany

[2] Univ Bielefeld, Fak Phys, D-33501 Bielefeld, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 293卷 / 03期

关键词：

exchange bias; ion bombardment;

D O I：

10.1016/j.jmmm.2004.12.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A polycrystalline Cu/Ni80Fe20/Mn83Ir17/CO/AlOx ferrornagnet-antiferromagnet layer system grown without applying an external magnetic field shows no unidirectional anisotropy in the as-prepared state. After 10keV-He ion bombardment in an external in-plane magnetic field, a clear unidirectional anisotropy collinear to the magnetic field direction during, bombardment is observed, indicating that ion bombardment can be used for this system to initialize the unidirectional exchange anisotropy. The magnetization reversal processes for various ion doses are discussed, based on longitudinal magnetooptical Kerr-effect measurements. (c) 5004 Elsevier B.V. All rights reserved.

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收藏

页码：849 / 853

页数：5

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