Head device having spin-valve read head for use in a disk storag

Details Head device having spin-valve read head for use in a disk storag Head device having spin-valve read head for use in a disk storag

1998-04-24

2000-10-03

Kim, W. Chris

Dynamic magnetic information storage or retrieval

Head

Hall effect

360 66, G11B 533, G11B 503

Patent

active

061281603

ABSTRACT:
A read head of a head device used in a disk storage apparatus is provided including a spin-valve magnetoresistive (MR) element. The spin-valve MR element comprises a pinning magnetic layer of which magnetizing direction is determined, a free magnetic layer of which magnetizing direction can be shifted by a signal magnetic field derived from the disk, and a non-magnetic layer sandwiched between the pinning magnetic layer and the free magnetic layer. The head also includes a remagnetization layer which functions as a control element for correcting the magnetizing direction of the pinning magnetic layer.

REFERENCES:
patent: 5650887 (1997-07-01), Dovek et al.
patent: 5748399 (1998-05-01), Gill
patent: 5903415 (1999-05-01), Gill
patent: 5998993 (1999-12-01), Inage et al.

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