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Methods to Enhance Thin Film MagnetoResistive Recording Head's Resistance to Physical and Chemical Attack

IP.com Disclosure Number: IPCOM000115972D
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 22K

Publishing Venue

IBM

Related People

Fouts, D: AUTHOR [+3]

Abstract

A thin film MagnetoResistive (MR) head is described which has a protective coating to improve both wear and corrosion resistance of the head.

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Methods to Enhance Thin Film MagnetoResistive Recording Head's Resistance
to Physical and Chemical Attack

      A thin film MagnetoResistive (MR) head is described which has a
protective coating to improve both wear and corrosion resistance of
the head.

      The head comprises an MR element 1 between two shields 2, 3.
The MR head structure is deposited on a suitable substrate 4, and
should the substrate be conductive, a non-conductive tough coating is
provided such as sputtered or CVD deposited alumina.  The first
shield is of a tough material such as hydrogenated amorphous carbon,
amorphous carbon, zirconium oxide, titanium oxide, alumina etc. with
any necessary adhesion promoters can be used.