Thin-film magnetic head

Details Thin-film magnetic head Thin-film magnetic head

1980-07-01

1982-03-02

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Core

360123, G11B 514, G11B 520

Patent

active

043181481

ABSTRACT:
A thin-film magnetic head constructed by depositing a conductor layer formed in a spiral pattern having two or more turns on a magnetic substrate. A non-magnetic insulating layer is then formed to fill the spaces between turns of the conductive layer in such a manner that the thickness of the non-magnetic layer is substantially the same as that of the conductor layer. A further non-magnetic insulating layer and a magnetic layer are formed successively on the non-magnetic layer. A gap is formed on one side of the lamination between the magnetic layer and the magnetic substrate interposing the further non-magnetic insulating layer. A magnetic circuit through the magnetic layer and the magnetic substrate around the conductive layer includes therein the gap.

REFERENCES:
patent: 4219854 (1980-08-01), Church et al.
patent: 4241367 (1980-12-01), Nomura et al.

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