发明申请
- 专利标题： MAGNETIC RECORDING APPARATUS
- 专利标题（中）： 磁记录装置
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申请号： US12512237申请日： 2009-07-30
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公开(公告)号： US20100027161A1公开(公告)日： 2010-02-04
- 发明人: Masayuki Takagishi , Kenichiro Yamada , Hitoshi Iwasaki , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
- 申请人： Masayuki Takagishi , Kenichiro Yamada , Hitoshi Iwasaki , Tomomi Funayama , Masahiro Takashita , Mariko Shimizu
- 专利权人： KABUSHIKI KAISHA TOSHIBA
- 当前专利权人： KABUSHIKI KAISHA TOSHIBA
- 优先权： JP2008-198144 20080731
- 主分类号： G11B5/127
- IPC分类号： G11B5/127
摘要：
A magnetic recording apparatus includes a magnetic recording head having a magnetic pole and a spin torque oscillator, the spin torque oscillator being placed adjacent to the magnetic pole and includes at least two magnetic layers of a first magnetic layer and a second magnetic layer, and a magnetic recording medium includes two magnetic layers of a recording layer and an antenna layer, the recording layer including a hard magnetic material, such that the antenna layer is formed closer to the magnetic recording head than the recording layer, in which the antenna layer has a resonance frequency fa lower than a resonance frequency fr of the recording layer, greater than a resonance frequency of the second magnetic layer, and the recording layer and the antenna layer are ferromagnetically coupled to each other.
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