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Magnetoresistive head and magnetic disk apparatus

  • US 6,172,859 B1
  • Filed: 07/22/1996
  • Issued: 01/09/2001
  • Est. Priority Date: 07/25/1995
  • Status: Expired due to Fees
First Claim
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1. A magnetoresistive head having a magnetoresistive film for converting a magnetic signal to an electric signal utilizing a magnetoresistive effect, a pair of electrodes for supplying a signal detection current to said magnetoresistive film, and a longitudinal bias layer which applies a longitudinal bias field to said magnetoresistive film, wherein said longitudinal bias layer comprises:

  • an underlayer composed of one of a ferromagnetic thin film having a crystal structure of a body-centered cell and an antiferromagnetic thin film having a crystal structure of a body-centered cell; and

    a hard magnetic thin film which is formed on said underlayer.

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