Stock material or miscellaneous articles – All metal or with adjacent metals – Having magnetic properties – or preformed fiber orientation...
Patent
1995-06-01
1997-01-07
Simmons, David A.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having magnetic properties, or preformed fiber orientation...
428928, 428632, 428631, 428666, 428667, B32B 1504, G11B 2100
Patent
active
055915337
ABSTRACT:
In a magnetoresistive read transducer, a material which is inert with respect to the soft film magnetic biasing layer is formed at the surface of the substrate prior to soft film deposition. In a preferred embodiment of the present invention, a substrate surface layer of metal such as Cr or Ta is used. These metals have high resistivity due to partial oxidation when deposited on the substrate to reduce shunting of sensing current through the magnetoresistive layer, and further acts as a barrier to protect the soft film from substrate interface contamination. The surface layer also acts as a seed layer to set the soft film magnetization orientation in a well-defined direction therefore reducing magnetic instability.
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Charles W. Keenan et al., General College Chemistry, Fifth Edition, Harper & Row Publishers, NY, pp. 489-490.
Gray Linda L.
International Business Machines - Corporation
Murray Leslie G.
Saber Paik
Simmons David A.
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