Thin-film magnetic head including non-magnetic layer for...

Details Thin-film magnetic head including non-magnetic layer for... Thin-film magnetic head including non-magnetic layer for...

2001-11-05

2008-05-27

Renner, Craig A. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125080, C360S125110, C360S125290, C360S125300

Reexamination Certificate

active

07379268

ABSTRACT:
A thin-film magnetic head comprises first and second magnetic layers, a gap layer provided between the first and second magnetic layers, a coupling portion for magnetically coupling the first and second magnetic layers to each other at a distance from a medium facing surface ABS, and a thin-film coil, 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 thin-film magnetic head further comprises a non-magnetic layer that is in contact with the surface of the pole portion layer farther from the gap layer. The non-magnetic layer prevents the surface of the pole portion layer farther from the gap layer from being damaged during the manufacturing process of the head, and thereby maintains the flatness of the surface.

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“Nikkei Electronics”, Sep. 25, 2000 Issue (No. 779), p. 206, Fig. 2.
“Head/Media Las Vegas 2000—Show Directroy”, Nov. 11-12, 2000.

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