Magneto-resistive effect type magnetic head

Details Magneto-resistive effect type magnetic head Magneto-resistive effect type magnetic head

1981-10-23

1984-04-17

Kilgore, Robert Martin

Dynamic magnetic information storage or retrieval

Head

Hall effect

360119, 360125, G11B 512, G11B 530, G11B 525

Patent

active

044438265

ABSTRACT:
The present invention is directed to improvements in a perpendicular magnetic recording-reproducing head. One of the improvements comprises the use of a magneto-resistive effect element to form the main pole of the magnetic head. This feature of the invention enables a stable and faithful reproduction of information recorded in a magnetic recording medium up to the shortest wavelength and to obtain a sufficiently large reproducing output signal. Another improvement comprises the use of such magneto-resistive effect elements in layers. The multilayer structure permits production of a large reproducing output and also an optimum S/N ratio even if the width of track is small.

REFERENCES:
patent: 4141051 (1979-02-01), Kuijk
patent: 4286299 (1981-08-01), Shirahata
patent: 4317148 (1982-02-01), Chi
patent: 4385334 (1983-05-01), Yanagida

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