Magnetic reading head using the hall effect

Details Magnetic reading head using the hall effect Magnetic reading head using the hall effect

1990-06-11

1992-03-03

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360126, G11B 537, G11B 5147

Patent

active

050937537

ABSTRACT:
Disclosed is a magnetic reading head using the Hall effect. In this head, the active element comprises a substrate on which the following are epitaxially grown: a layer of a semiconductor material with high electron mobility and a magnetic metallic multilayer formed by stacked layers of magnetic materials and non-magnetic materials, the layer of semiconductor material and the multilayer being electrically insulated from each other. This head also has electrodes for current supply and Hall voltage detection that are in contact with the layer of semiconductor material. The disclosed device can be applied to the reading of magnetic recording media.

REFERENCES:
patent: 4179719 (1979-12-01), Imamura & Mimura
patent: 4584552 (1986-04-01), Suzuki et al.
patent: 4751598 (1988-06-01), Hamilton
IBM/TDB vol. 18, No. 12, May 1976, pg4218, "GdxFey and GdCoFe Malenals for Magnetic Head Hall Sensors", by Gambino et al.
Patent Abstracts of Japan, vol. 5 No. 122 (P-074).

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