Invention Grant
- Patent Title: Magnetic head for perpendicular magnetic recording having a specially configured shield layer
- Patent Title (中): 用于垂直磁记录的磁头,具有专门设计的屏蔽层
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Application No.: US12320932Application Date: 2009-02-09
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Publication No.: US07656613B2Publication Date: 2010-02-02
- Inventor: Yoshitaka Sasaki , Hiroyuki Itoh , Dong-Hong Li , Shigeki Tanemura , Hironori Araki
- Applicant: Yoshitaka Sasaki , Hiroyuki Itoh , Dong-Hong Li , Shigeki Tanemura , Hironori Araki
- Applicant Address: US CA Milpitas
- Assignee: Headway Technologies, Inc.
- Current Assignee: Headway Technologies, Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Oliff & Berridge, PLC
- Main IPC: G11B5/127
- IPC: G11B5/127

Abstract:
A magnetic head comprises a pole layer, a shield layer, a gap layer disposed between the pole layer and the shield layer, and a coil. The shield layer incorporates: a first layer disposed on the gap layer; a second layer disposed on the first layer; and a third layer disposed on the second layer. The first layer has an end face located in a medium facing surface. An end face of each of the second and third layers closer to the medium facing surface is located at a distance from the medium facing surface. A first nonmagnetic layer is disposed around the first layer. A second nonmagnetic layer is disposed between the medium facing surface and the end face of the second layer closer to the medium facing surface.
Public/Granted literature
- US20090147400A1 Magnetic head for perpendicular magnetic recording Public/Granted day:2009-06-11
Information query
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