Spin valve magnetoresistive head having a free layer...

Details Spin valve magnetoresistive head having a free layer... Spin valve magnetoresistive head having a free layer...

2005-03-22

2005-03-22

Evans, Jefferson (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

06870715

ABSTRACT:
A magnetoresistive element exhibiting good external magnetic field detection characteristics is provided. The magnetoresistive element includes a laminate comprising a nonmagnetic conductive layer, first and second ferromagnetic layer sandwiching the nonmagnetic conductive layer, and a first antiferromagnetic layer for pinning the magnetization direction of the first ferromagnetic layer, deposited on the face of the first ferromagnetic layer opposite the face in contact with the nonmagnetic conductive layer. Bias layers for applying a bias magnetic field to the second ferromagnetic layer are provided respectively on two ends of the laminate. Each bias layer comprises second and third antiferromagnetic layers and a third ferromagnetic layer sandwiched by the second and third antiferromagnetic layers so as to magnetically couple with the second and third antiferromagnetic layer. Two end faces of the second ferromagnetic layer come into contact with the third ferromagnetic layers.

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