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US07679861B2 Magnetic head for perpendicular magnetic recording with controlled state of magnetization of the end face of the pole layer 有权
用于垂直磁记录的磁头，具有磁极层端面的受控磁化状态

  • Patent Title: Magnetic head for perpendicular magnetic recording with controlled state of magnetization of the end face of the pole layer
  • Patent Title (中): 用于垂直磁记录的磁头，具有磁极层端面的受控磁化状态
  • Application No.: US11591504
    Application Date: 2006-11-02
  • Publication No.: US07679861B2
    Publication Date: 2010-03-16
  • Inventor: Kei Hirata , Kiyoshi Noguchi
  • Applicant: Kei Hirata , Kiyoshi Noguchi
  • Applicant Address: JP Tokyo
  • Assignee: TDK Corporation
  • Current Assignee: TDK Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: Oliff & Berridge, PLC
  • Priority: JP2005-361166 20051215
  • Main IPC: G11B5/31
  • IPC: G11B5/31
Magnetic head for perpendicular magnetic recording with controlled state of magnetization of the end face of the pole layer
Abstract:
A pole layer incorporates a track width defining portion and a wide portion. The track width defining portion has an end face that is located in the medium facing surface and that defines the track width. The maximum width of the wide portion is greater than the track width and equal to or greater than the length of the wide portion taken in the direction orthogonal to the medium facing surface. When the coil is generating no magnetic field, in the end face of the track width defining portion, there exist first and second regions in which the directions of components of magnetization orthogonal to the medium facing surface are opposite.
Abstract(Chinese):

极层包括轨道宽度限定部分和宽部分。 轨道宽度限定部分具有位于介质面向表面中并限定轨道宽度的端面。 宽部分的最大宽度大于轨道宽度，并且等于或大于在与面向介质的表面正交的方向上拍摄的宽部分的长度。 当线圈不产生磁场时，在轨道宽度限定部分的端面中，存在第一和第二区域，其中与面向介质的表面正交的磁化分量的方向相反。

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