发明申请
US20080218908A1 PERPENDICULAR MAGNETIC RECORDING HEAD AND MANUFACTURING METHOD THEREOF 有权
全能磁记录头及其制造方法

  • 专利标题: PERPENDICULAR MAGNETIC RECORDING HEAD AND MANUFACTURING METHOD THEREOF
  • 专利标题(中): 全能磁记录头及其制造方法
  • 申请号: US12037369
    申请日: 2008-02-26
  • 公开(公告)号: US20080218908A1
    公开(公告)日: 2008-09-11
  • 发明人: Hisayuki YazawaKiyoshi Kobayashi
  • 申请人: Hisayuki YazawaKiyoshi Kobayashi
  • 优先权: JP2007-059476 20070309
  • 主分类号: G11B5/33
  • IPC分类号: G11B5/33 B05D5/12
PERPENDICULAR MAGNETIC RECORDING HEAD AND MANUFACTURING METHOD THEREOF
摘要:
A perpendicular magnetic recording head includes a main magnetic pole layer; and a return yoke layer laminated on the main magnetic pole layer with a magnetic gap layer formed of a nonmagnetic material disposed on an opposing surface opposite a recording medium. The return yoke layer includes a first throat part opposing the main magnetic pole layer at a side close to the recording medium-opposing surface with a first gap spacing corresponding to a film thickness of the magnetic gap layer; and a second throat part extending to a deeper side than the first throat part in a height direction and opposing the main magnetic pole layer with a second gap spacing greater than the first gap spacing. A throat height determining layer is provided on the main magnetic pole layer or the magnetic gap layer, the throat height determining layer defining a dimension of the first throat part of the return yoke layer in the height direction and formed of an inorganic nonmagnetic material.
信息查询
0/0