GMR angle detector with an artificial antiferromagnetic subsystem (AAF)

被引：81
|
作者：
vandenBerg, HAM [1 ]
Clemens, W [1 ]
Gieres, G [1 ]
Rupp, G [1 ]
Vieth, M [1 ]
Wecker, J [1 ]
Zoll, S [1 ]
机构：
[1] IPCMS GEMM,F-67037 STRASBOURG,FRANCE
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1997年 / 165卷 / 1-3期
关键词：
giant magnetoresistance; exchange coupling - interlayer; sensors; -; magnetoresistive; angle detection;
D O I：
10.1016/S0304-8853(96)00607-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A magnetoresistive GMR sensor scheme for detection of angular positions is demonstrated and analyzed in which the hard magnetic layers are replaced by artificial antiferromagnetic subsystems (AAFs). These consist of ferromagnetic layers (Go) that are antiferromagnetically coupled via interlayers (Cu or Ru). The rigidity of this AAF is improved by an order of magnitude as compared to the individual Co layers. Operational field windows for 360 degrees angle detectors of 15-20 kA/m have been realized. The maximal sensor signal Delta rho/rho is 6%. The temperature operation range extends up to 150 degrees C. The angle resolution is about 1 degrees.
引用
收藏
页码：524 / 528
页数：5
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