MR composite-type thin-film magnetic head having an upper pole w

Details MR composite-type thin-film magnetic head having an upper pole w MR composite-type thin-film magnetic head having an upper pole w

1998-09-22

2000-08-08

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Head

Core

360317, G11B 521, G11B 539

Patent

active

061010685

ABSTRACT:
A thin-film magnetic head includes an MR element serving as a reproducing element and a recording induction coil. The MR element is disposed between a lower magnetic pole and an intermediate magnetic pole. The recording induction coil is disposed between the intermediate magnetic pole and an upper magnetic pole. At least a portion of the upper magnetic pole in the vicinity of a recording gap is formed of a material having a high saturation magnetic flux density of 1.4 T or higher. The intermediate magnetic pole is formed of a material having a high resistivity of 80 .mu..OMEGA..multidot.cm or higher.

REFERENCES:
patent: 5371643 (1994-12-01), Yuito et al.
patent: 5754376 (1998-05-01), Kobayashi et al.
patent: 5938941 (1999-08-01), Ishiwata et al.
patent: 5995342 (1999-11-01), Cohen et al.

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