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Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 25, 2007
Patent Application Number
10535994
Date Filed
November 28, 2003
Patent Primary Examiner
Patent abstract
A method for manufacturing a magnetic disk apparatus having a highly sensitive reproducing head. A spin-valve-type multilayer film composed of an antiferromagnetic layer, a ferromagnetic layer, a nonmagnetic layer and a free magnetic layer is used as a magnetoresistive-effect device for the reproducing head. An antiferromagnetic reaction layer is formed between the antiferromagnetic reaction layer and the ferromagnetic layer. The antiferromagnetic reaction layer is formed of a metallic compound containing oxygen.
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