Method for manufacturing a spin valve having an enhanced...

Metal working – Method of mechanical manufacture – Electrical device making

Reexamination Certificate

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C029S603070, C029S603090, C029S603130, C360S324100, C360S324110, C360S324120, C427S127000, C427S128000

Reexamination Certificate

active

06907655

ABSTRACT:
A spin valve sensor is provided with a negative ferromagnetic coupling field −HFCfor properly biasing a free layer and a spin filter layer is employed between the free layer and a capping layer for increasing the magnetoresistive coefficient dr/R of the spin valve sensor. A top portion of the free layer is oxidized for improving the negative ferromagnetic coupling field −HFCwhen the spin filter layer is employed for increasing the magnetoresistive coefficient dr/R.

REFERENCES:
patent: 6404606 (2002-06-01), Pinarbasi
patent: 6452204 (2002-09-01), Ishiwata et al.
patent: 6759120 (2004-07-01), Jongill et al.
patent: 11086235 (1999-03-01), None
“Demonstration of 1 Gbit/sec magnetic recording using an integrated inductive write/GMR read head”; Shi, S.; Liu, F.; Chen, H Chen, Y.; Stoev, K.; Saha, R.; Tong, H.; Dey, S.; Magnetics, IEEE Transactions, Sep 2000; pp.: 2517-2519.

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