Current perpendicular to the plane spin-valves with CoFeGe magnetic layers

被引：23
|
作者：
Maat, S. [1 ]
Carey, M. J. [1 ]
Childress, J. R. [1 ]
机构：
[1] Hitachi Global Storage Technol, San Jose Res Ctr, San Jose, CA 95135 USA
来源：
APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 14期
关键词：
Cobalt alloys;
D O I：
10.1063/1.2993213
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetotransport properties of current perpendicular to the plane giant magnetoresistive spin-valves utilizing (CoFe)(100-x)Ge(x) alloys are investigated. The composition range of 21 <= x <= 32 at. % is determined to be the alloy composition that maximizes magnetoresistance. Delta RA values of 2.6 m Omega-mu m(2) are measured for spin-valves with CoFeGe in the free and reference layer resulting in magnetoresistance values of greater than 6%, which is almost twice the value of similar spin-valves with CoFeAl alloys. An analysis of the physical properties of the CoFeGe thin films in the range of interest is also presented. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2993213]
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页数：3
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