Invention Grant
- Patent Title: Magnetic recording head, magnetic head assembly, magnetic recording apparatus, and magnetic recording method
- Patent Title (中): 磁记录头，磁头组件，磁记录装置和磁记录方法
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Application No.: US12591752Application Date: 2009-11-30
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Publication No.: US08767346B2Publication Date: 2014-07-01
- Inventor: Kenichiro Yamada , Hitoshi Iwasaki , Masayuki Takagishi
- Applicant: Kenichiro Yamada , Hitoshi Iwasaki , Masayuki Takagishi
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Nixon & Vanderhye, P.C.
- Priority: JP2008-305693 20081128
- Main IPC: G11B5/17
- IPC: G11B5/17
Abstract:
A magnetic recording head includes a first magnetic pole, a second magnetic pole, a spin torque oscillator, a first coil, a second coil, and a third coil. The first magnetic pole applies a recording magnetic field to a magnetic recording medium. The second magnetic pole is provided parallel to the first magnetic pole. At least a portion of the spin torque oscillator is provided between the first magnetic pole and the second magnetic pole. The first coil magnetizes the first magnetic pole. A current is passed through the second coil independently of the first coil. A current is passed through the third coil independently of both the first coil and the second coil.
Public/Granted literature
Information query
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