Perpendicular magnetic recording head provided with side shield and magnetic disk apparatus using the same

  • US 8,315,015 B2
  • Filed: 03/27/2012
  • Issued: 11/20/2012
  • Est. Priority Date: 05/11/2006
  • Status: Active Grant
First Claim
Patent Images

1. A perpendicular magnetic recording head comprising:

  • a main pole which generates a recording magnetic field; and

    a shield magnetically spaced from the main pole in a cross-track direction,wherein a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole, andwherein the ratio SZ/PL of a distance SZ between the trailing edge of the main pole and the point on the trailing edge of the side shield which is closest to the main pole to a pole length PL of the main pole is 1/3 to 1.

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