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Spin valve magnetic head with three underlayers

  • US 6,833,981 B2
  • Filed: 02/22/2002
  • Issued: 12/21/2004
  • Est. Priority Date: 06/28/2001
  • Status: Expired due to Fees
First Claim
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1. A spin valve magnetic head, providing on a substrate, a laminated structure that has an antiferromagnetic layer, fixation layer, non-magnetic layer and unconstraint layer, comprising:

  • a first underlayer of Ta;

    a second underlayer of NiFeCr; and

    a third underlayer of NiFe, said first, second and third underlayers being interposed between said substrate and said laminated structure.

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