Invention Grant
- Patent Title: Magnetic head for perpendicular magnetic recording
- Patent Title (中): 用于垂直磁记录的磁头
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Application No.: US13051560Application Date: 2011-03-18
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Publication No.: US08213116B2Publication Date: 2012-07-03
- Inventor: Yoshitaka Sasaki , Hiroyuki Itoh , Shigeki Tanemura , Tatsushi Shimizu , Tatsuya Shimizu
- Applicant: Yoshitaka Sasaki , Hiroyuki Itoh , Shigeki Tanemura , Tatsushi Shimizu , Tatsuya Shimizu
- Applicant Address: US CA Milpitas CN Hong Kong
- Assignee: Headway Technologies, Inc.,SAE Magnetics (H.K.) Ltd.
- Current Assignee: Headway Technologies, Inc.,SAE Magnetics (H.K.) Ltd.
- Current Assignee Address: US CA Milpitas CN Hong Kong
- Agency: Oliff & Berridge, PLC
- Main IPC: G11B5/147
- IPC: G11B5/147

Abstract:
A magnetic layer for writing incorporates: a pole layer having an end face located in a medium facing surface; and an upper yoke layer. A first magnetic layer for flux concentration is connected to the pole layer at a location away from the medium facing surface, and passes a magnetic flux corresponding to a magnetic field generated by a first coil. A second magnetic layer for flux concentration is connected to the upper yoke layer at a location away from the medium facing surface, and passes a magnetic flux corresponding to a magnetic field generated by a second coil. A nonmagnetic layer is disposed between the pole layer and the upper yoke layer. The upper yoke layer is connected to the pole layer at a location closer to the medium facing surface than the nonmagnetic layer.
Public/Granted literature
- US20110170216A1 MAGNETIC HEAD FOR PERPENDICULAR MAGNETIC RECORDING Public/Granted day:2011-07-14
Information query
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