发明授权
- 专利标题： Magnetic recording apparatus provided with microwave-assisted head
- 专利标题（中）： 带有微波辅助头的磁记录装置
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申请号： US12721034申请日： 2010-03-10
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公开(公告)号： US08094399B2公开(公告)日： 2012-01-10
- 发明人: Tetsuya Roppongi , Takuya Adachi , Isamu Sato , Hiroshi Ikeda , Mikio Matsuzaki
- 申请人： Tetsuya Roppongi , Takuya Adachi , Isamu Sato , Hiroshi Ikeda , Mikio Matsuzaki
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Frommer Lawrence & Haug LLP
- 主分类号： G11B5/02
- IPC分类号： G11B5/02
摘要：
A magnetic recording apparatus includes a magnetic recording medium having a magnetic recording layer, a thin-film magnetic head with a microwave-band magnetic drive function, the head having a write field generation means that generates a write field to the magnetic recording medium in response to a write signal, and a microwave generator that is provided independent of the write field generation means and generates an alternating magnetic field in plane having a microwave-band frequency when microwave-excitation current is fed, an excitation current generation means that generates the microwave-excitation current by amplitude-modulating microwave carrier current with a modulating signal having a fixed period, and a write signal supply means that generates the write signal and applies it to the write field generation means of the thin-film magnetic head.