Inverse giant magnetoresistance due to spin-dependent bulk scattering in Fe1-xCrx/Cu/Co

被引：0

作者：

Thi, Ngoc Anh Nguyen ^{[1
]}

Thi, Hoang Yen Nguyen ^{[1
]}

Yi, Hyunjung ^{[1
]}

Joo, Sung-Jung ^{[1
]}

Shin, Kyung-Ho ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Ctr Spintron Res, Seoul 130650, South Korea

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2007年 / 204卷 / 12期

关键词：

D O I：

10.1002/pssa.200777266

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Inverse giant magnetoresistance (IGMR) can be observed in multilayers with alternating two ferromagnetic layers F1 and F2 possessing opposite spin scattering asymmetries. We report here the observation of inverse current-in-plane giant magnetoresistance (CIP-IGMR) in Fe1-xCrx/Cu/Co spin-valve systems with varying Cr concentration and FeCr-layer thickness. The highest magnitude of IGMR, -0.45 %, has been achieved in the sample doped with 35 at. % Cr. It is shown that the proper substitution of Cr for Fe can alter spin-dependent scattering in the Fe layer, causing the inversion of the bulk spin scattering asymmetry coefficient therefore resulting in CIP-IGMR. The GMR has a dominant contribution to the observed inverse MR, rather than the anisotropic magnetoresistance (AMR) component. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：3954 / 3957

页数：4

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