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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

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