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Corrosion Resistant Magenetoresistive Devices

IP.com Disclosure Number: IPCOM000055095D
Original Publication Date: 1980-May-01
Included in the Prior Art Database: 2005-Feb-13

Publishing Venue

IBM

Related People

Authors:
Aboaf, JA Ahn, KY Klokholm, E [+details]

Abstract

The corrosion problem of permalloy film devices is well known. As an example, a magnetoresistive (MR) head which utilizes a thin film (300 to 500 Angstrom thickness) suffers from corrosion, since the permalloy is exposed to ambient conditions. Passivation of such devices is difficult because the head element has to be exposed to ambient conditions for efficient sensing.