Specific core structure in a magneto-resistance head

Details Specific core structure in a magneto-resistance head Specific core structure in a magneto-resistance head

1991-10-28

1993-12-14

Westin, Edward P.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360126, C11B 539, C11B 5147

Patent

active

052708934

ABSTRACT:
A magneto-resistance effect type thin film magnetic head which does not produce significant Barkhausen noises and has stabilized characteristics even where the track width is smaller than, for example, 10 .mu.m. The magnetic head comprises a base member, a lower layer thin film magnetic core and an upper layer thin film magnetic core layered on the base member in such a manner that a magnetic gap is formed between front ends thereof, the gap being open to an opposing face of the magnetic head which is in contact with or opposed to a magnetic record medium, and a magneto-resistance effect magnetic sensing section disposed in the magnetic gap between the lower and upper layer thin film magnetic cores. The front end of the lower layer thin film magnetic core which defines the magnetic gap has a width selected to be smaller than the width of the front end of the upper layer thin film magnetic core which defines the magnetic gap so as to define a track width of the magnetic gap.

REFERENCES:
patent: 4807076 (1989-02-01), Nakashima et al.
patent: 4885649 (1989-12-01), Das

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