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Comparison of flicker noise in single layer, AMR and GMR sandwich magnetic film devices

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4 Author(s)
Wan, H. ; Solid State Electron. Center, Honeywell Inc., Plymouth, MN, USA ; Bohlinger, M.M. ; Jenson, M. ; Hurst, A.

Flicker noise comparison has been made on single layer NiFeCo, Sandwich AMR NiFeCo/TaN/NiFeCo and GMR NiFeCo/CoFe/Cu/CoFe/NiFeCo films. In a single magnetic domain state, AMR films have noise close to the thermal noise, GMR has 2-3 times higher noise, and in a state having a useful MR ratio, the GMR film has 10 times higher noise than AMR sandwich film, while the sandwich film has 10 times higher noise than single layer AMR film

Published in:

Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 5 )

Date of Publication:

Sep 1997

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