Invention Grant
- Patent Title: Magnetic head for perpendicular magnetic recording
- Patent Title (中): 磁头用于垂直磁记录
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Application No.: US13476543Application Date: 2012-05-21
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Publication No.: US08427782B2Publication Date: 2013-04-23
- Inventor: Yoshitaka Sasaki , Hiroyuki Itoh , Shigeki Tanemura , Tatsushi Shimizu , Tatsuya Shimizu
- Applicant: Yoshitaka Sasaki , Hiroyuki Itoh , Shigeki Tanemura , Tatsushi Shimizu , Tatsuya Shimizu
- Applicant Address: unknown Milpitas CN Hong Kong
- Assignee: Headway Technology, Inc.,SAE Magnetics (H.K.) Ltd.
- Current Assignee: Headway Technology, Inc.,SAE Magnetics (H.K.) Ltd.
- Current Assignee Address: unknown 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 a lower yoke layer. A first magnetic layer for flux concentration is connected to the lower yoke 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 pole 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 lower yoke layer. The lower yoke layer is connected to the pole layer at a location closer to the medium facing surface than the nonmagnetic layer.
Public/Granted literature
- US20120229932A1 MAGNETIC HEAD FOR PERPENDICULAR MAGNETIC RECORDING Public/Granted day:2012-09-13
Information query
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