Thin-film magnetic head and method of manufacturing same

Details Thin-film magnetic head and method of manufacturing same Thin-film magnetic head and method of manufacturing same

2005-07-26

2005-07-26

Heinz, A. J. (Department: 2653)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S125330

Reexamination Certificate

active

06922316

ABSTRACT:
A thin-film magnetic head comprises: a first magnetic layer and a second magnetic layer each of which includes a magnetic pole portion, the first and second magnetic layers being magnetically coupled to each other at a distance from the medium facing surface ABS; a gap layer provided between the first and second magnetic layers; and a thin-film coil at least a part of which is disposed between the first and second magnetic layers. The second magnetic layer has a pole portion layer and a yoke portion layer. The pole portion layer has a saturated magnetic flux density equal to or greater than that of the yoke portion layer. The yoke portion layer includes: a first layer and a second layer, of which the first layer is in contact with the first magnetic layer and a surface of the pole portion layer that is closer to the gap layer; and the second layer is in contact with the first layer, the rear end surface of the pole portion layer and both side surfaces of the pole portion layer in the width direction.

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patent: A 11-102506 (1999-04-01), None
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“Nikkei Electronics”, Sep. 25, 2000 Issue (No. 779), p. 206, FIG. 2.
“Head/Media Las Vegas 2000—Show Directory” Nov. 11-12, 2000.

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