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
收藏
页码：3954 / 3957
页数：4
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