Magneto-resistive head with reduced thermal noise

Details Magneto-resistive head with reduced thermal noise Magneto-resistive head with reduced thermal noise

1985-01-23

1987-07-28

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 5127, G11B 533

Patent

active

046835083

ABSTRACT:
To lessen thermal noise in a magneto-resistive head employing a slotted magneto-resistive sensing element, the present invention provides for such element to be plated with a highly thermally conductive film (e.g. gold, silver, copper, aluminum, etc.) exclusively in the slotted portion of the element. By restricting such plating to the slotted portion of the sensing element, the film thereon will be precluded from electrically short circuiting the magneto-resistive sensing element . . . while, at the same time, serving as an energy-spreading heat sink.

REFERENCES:
Feng, J. J. "Initializing Single-Domain States in Barberpole Magnetoresistive Sensors", vol. 20, No. 6, Nov. 1977, IBM Tech. Disclosure Bulletin, pp. 2441-2442.

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