Invention Grant
US06697235B2 Magnetoresistive head and magnetic recoding/reproducing apparatus using the same 失效
磁阻磁头及使用其的磁记录/再现装置

  • Patent Title: Magnetoresistive head and magnetic recoding/reproducing apparatus using the same
  • Patent Title (中): 磁阻磁头及使用其的磁记录/再现装置
  • Application No.: US10041611
    Application Date: 2002-01-10
  • Publication No.: US06697235B2
    Publication Date: 2004-02-24
  • Inventor: Takayoshi OhtsuKoichi Nishioka
  • Applicant: Takayoshi OhtsuKoichi Nishioka
  • Priority: JP2001-129661 20010426
  • Main IPC: G11B539
  • IPC: G11B539
Magnetoresistive head and magnetic recoding/reproducing apparatus using the same
Abstract:
A magnetoresistive head includes a substrate, first and second magnetic shields, a magnetoresistive effect film formed within a gap layer between the first and second magnetic shields, a permanent magnet layer provided on both sides of the magnetoresistive effect film in order to apply a magnetic field to the film, and an electrode film provided on the permanent magnet layer so as to permit a signal detected current to flow, wherein a magnetic film is stacked on the permanent magnet layer with a nonmagnetic separation layer interposed between the permanent magnet layer and the magnetic film so that the magnetic film has formed therein a magnetic path, thus, it is possible to provide a GMR reproduce head of which the reproduction sensitivity can be maintained high even if the track width is narrow.
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