Giant magnetoresistance by exchange springs in DyFe2/YFe2 superlattices -: art. no. 186808

被引：63
|
作者：
Gordeev, SN [1 ]
Beaujour, JML
Bowden, GJ
Rainford, BD
de Groot, PAJ
Ward, RCC
Wells, MR
Jansen, AGM
机构：
[1] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England
[2] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England
[3] Max Planck Inst Festkorperforsch, Grenoble High Magnet Field Lab, F-38042 Grenoble 9, France
[4] CNRS, F-38042 Grenoble 9, France
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.87.186808
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Magnetization and magnetoresistance measurements are reported for antiferromagnetically coupled DyFe2/YFe2 multilayers in fields up to 23 T It is demonstrated that the formation of short exchange springs (similar to 20 Angstrom) in the magnetically soft YFe2 layers results in a giant magnetoresistance as high as 32% in the spring region. It is shown that both the magnitude of the effect and its dependence on magnetic field are in good agreement with the theory of Levy and Zhang for domain wall induced giant magnetoresistance.
引用
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页码：186808 / 1
页数：4
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