Invention Grant
US07990652B2 Perpendicular magnetic write head with stepped write pole for reduced MCW dependency on skew angle
有权
具有阶梯式写入极的垂直磁性写入头，用于减小MCW对偏斜角的依赖
- Patent Title: Perpendicular magnetic write head with stepped write pole for reduced MCW dependency on skew angle
- Patent Title (中): 具有阶梯式写入极的垂直磁性写入头，用于减小MCW对偏斜角的依赖
-
Application No.: US11949620Application Date: 2007-12-03
-
Publication No.: US07990652B2Publication Date: 2011-08-02
- Inventor: Wen-Chien David Hsiao , Yimin Hsu , Quan-chiu Harry Lam , Yansheng Luo , Vladimir Nikitin , Changqing Shi
- Applicant: Wen-Chien David Hsiao , Yimin Hsu , Quan-chiu Harry Lam , Yansheng Luo , Vladimir Nikitin , Changqing Shi
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee: Hitachi Global Storage Technologies Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Zilka-Kotab, PC
- Main IPC: G11B5/187
- IPC: G11B5/187
Abstract:
A magnetic write head for perpendicular magnetic data recording having a notched write pole for reduced magnetic core width (MCW) dependence on skew. The write pole is configured with a notch that can extend to or slightly beyond the flare point of the write pole, and is formed on the leading portion of the write pole. The notch can have a notch depth, as measured from the ABS of 50-200 nm or about 120 nm. The notch can have a notch height, measured in the down track direction that is 40-90 nm or 20-90 percent of the write pole height.
Public/Granted literature
- US20090141397A1 PERPENDICULAR MAGNETIC WRITE HEAD WITH STEPPED WRITE POLE FOR REDUCED MCW DEPENDENCY ON SKEW ANGLE Public/Granted day:2009-06-04
Information query
IPC分类:
