Hall effect magnetic head

Details Hall effect magnetic head Hall effect magnetic head

1982-12-10

1986-03-18

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360121, G11B 538

Patent

active

045772509

ABSTRACT:
A Hall effect magnetic head performs predetermined operations such as recording, reproducing and erasing of data on a recording medium which is capable of magnetically recording data therein. The magnetic head includes first and second magnetic members which define therebetween a front gap which faces the recording medium, a space in which a magnetic field developing means is disposed, and a rear gap in which a Hall element is disposed. The Hall element is applied with a bias magnetic field developed by the magnetic field developing means and by a signal magnetic field developed by the recording medium. The Hall element comprises a vertically magnetizable thin layer or film and is caused to output as a Hall voltage a signal contained in the signal magnetic field. The front and rear gaps are adequately dimensioned to increase the Hall voltage. The magnetic head may include second magnetic field developing means for preventing the bias magnetic field from influencing the recording medium.

REFERENCES:
patent: 3146317 (1964-08-01), Kuhrt et al.
IBM/TDB, vol. 18, No. 12, May 1976, "Magnetic Films for Hall Effect Devices . . . ", by Gambino et al.

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