DocumentCode
1387075
Title
GMR sensor scheme with artificial antiferromagnetic subsystem
Author
van den Berg, H.A.M. ; Clemens, W. ; Gieres, G. ; Rupp, G. ; Schelter, W. ; Vieth, M.
Author_Institution
Corp. Res. & Dev., Siemens AG, Erlangen, Germany
Volume
32
Issue
5
fYear
1996
fDate
9/1/1996 12:00:00 AM
Firstpage
4624
Lastpage
4626
Abstract
A magnetoresistive GMR-sensor scheme is demonstrated and analyzed in which the hard magnetic layers are replaced by Artificial Antiferromagnetic Subsystems (AAF´s). These consist of ferromagnetic layers antiferromagnetically coupled via interlayers. The magnetic rigidity of this AAF is improved by an order of magnitude compared to the individual magnetic layers. Operational field windows for 360°-angle detectors 20 kA/m have been realized. The sensor signal Δρ/ρ is 6%. The temperature-operation range extends itself up to 150°C. The angle resolution is 1°
Keywords
antiferromagnetic materials; giant magnetoresistance; magnetic sensors; magnetoresistive devices; 150 C; artificial antiferromagnetic subsystem; magnetic rigidity; magnetoresistive GMR sensor; Anisotropic magnetoresistance; Antiferromagnetic materials; Couplings; Giant magnetoresistance; Magnetic anisotropy; Magnetic flux; Magnetic sensors; Perpendicular magnetic anisotropy; Saturation magnetization; Soft magnetic materials;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.539099
Filename
539099
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