Thin-film Magnetic head having a narrow core width and process f

Details Thin-film Magnetic head having a narrow core width and process f Thin-film Magnetic head having a narrow core width and process f

1997-10-24

1999-04-13

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Head

Core

360119, 2960316, G11B 5187

Patent

active

058943897

ABSTRACT:
A recess with a slanted wall is provided on a substrate, a magnetic yoke layer is formed so that the end of the magnetic yoke layer covers the slanted wall, and the recess is filled with a filling layer. Flat working is performed until a portion of the substrate is removed so that the magnetic yoke layer appears on the flat worked surface of the substrate, and the width of the magnetic yoke layer appearing on the top flat surface is almost determined by the thickness of the magnetic yoke layer, which defines the width of a core of a magnetic head. Thus, a narrow core width of a magnetic head is provided.

REFERENCES:
patent: 4151574 (1979-04-01), Gerkema et al.
patent: 4799118 (1989-01-01), Yamada et al.
patent: 5225953 (1993-07-01), Wada et al.
patent: 5301418 (1994-04-01), Dirne et al.
patent: 5666249 (1997-09-01), Ohmori et al.
patent: 5691866 (1997-11-01), Yamamoto
patent: 5734534 (1998-03-01), Yamamoto et al.

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