Thin film magnetic head

Details Thin film magnetic head Thin film magnetic head

1991-09-12

1993-12-28

Church, Craig E.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 5127

Patent

active

052745201

ABSTRACT:
A thin film magnetic head comprises a thin film magnetic core provided with a magnetic head gap, forming part of a first closed magnetic path and extended substantially in parallel to an air bearing surface to be disposed opposite to the surface of a magnetic recording medium, a head coil magnetically coupled with the first closed magnetic path, and a magnetoresistance-effect element forming a second closed magnetic path magnetically coupled with a portion of the first closed magnetic path including the magnetic head gap. The thin film magnetic head is provided with auxiliary magnetic head gaps respectively in portions of the first closed magnetic path other than the portion including the magnetic head gap. The portions of the first closed magnetic path provided with the auxiliary magnetic head gaps have comparatively high magnetic resistances, so that the distribution of magnetic flux to the magnetoresistance-effect element can be regulated to improve the reproducing efficiency of the magnetoresistance-effect element.

REFERENCES:
patent: 3975772 (1976-08-01), Lin

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