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MAGNETIC RECORDING DEVICE

  • US 20120275061A1
  • Filed: 04/30/2012
  • Published: 11/01/2012
  • Est. Priority Date: 10/30/2009
  • Status: Active Grant
First Claim
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1. A magnetic recording device comprising:

  • a magnetic recording head including;

    a main magnetic pole having a medium facing surface and a main magnetic pole side surface intersecting the medium facing surface, a main magnetic pole including a soft magnetic material, and configured to generate a recording magnetic field;

    a shield having a shield side surface facing the main magnetic pole side surface;

    a stacked structure provided between the main magnetic pole and the shield,the stacked structure including;

    a first magnetic layer;

    a second magnetic layer; and

    an intermediate layer provided between the first magnetic layer and the second magnetic layer and including a nonmagnetic material; and

    a magnetic recording medium including;

    a backing layer including a soft magnetic material and forming a magnetic circuit together with the main magnetic pole and the shield; and

    a magnetic recording layer provided between the backing layer and the magnetic recording head, having a major surface, the major surface facing the medium facing surface and the shield, and subjected to perpendicular magnetic recording by the recording magnetic field,a first distance along a direction perpendicular to the major surface between an end portion of the medium facing surface on a side of the stacked structure and the backing layer being twice or more of a second distance along a direction perpendicular to the main magnetic pole side surface between the main magnetic pole side surface and the shield side surface.

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