Quantitative investigation of FeMn-based spin-valves by rotating field magnetoresistance measurements

被引：5

作者：

Paul, A ^{[1
]}

Buchmeier, M ^{[1
]}

Bürgler, DE ^{[1
]}

Grünberg, P ^{[1
]}

机构：

[1] Forschungszentrum Julich GmbH, Inst Festkorperforsch, D-52425 Julich, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 286卷

关键词：

spin-valve; exchange bias; rotational hysteresis;

D O I：

10.1016/j.jmmm.2004.09.075

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We measure the magnetoresistance of Ta/NiFe/FeMn/NiFe/Co(t(Co))/Cu/Co(t(Co))/NiFe spin-valves as a function of field strength and direction. The exchange bias H-EB and the giant magnetoresistance depend on the Co thickness t(Co), and the resistance shows rotational hysteresis when the external field is close to compensating HEB. A single-domain model reproduces the angular dependence of the magnetoresistance in regions without hysteresis, yields H-EB values in agreement with MOKE, and allows one to precisely determine the interlayer coupling and uniaxial anisotropies although they are much weaker than H-EB. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：258 / 261

页数：4

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