发明授权
- 专利标题： Magnetic recording method using microwave assisted head
- 专利标题（中）： 磁记录方法使用微波辅助头
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申请号： US13297377申请日： 2011-11-16
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公开(公告)号： US08547655B2公开(公告)日： 2013-10-01
- 发明人: Tsutomu Aoyama , Hiroshi Ikeda , Isamu Sato
- 申请人： Tsutomu Aoyama , Hiroshi Ikeda , Isamu Sato
- 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： Posz Law Group, PLC
- 优先权： JP2010-258711 20101119
- 主分类号： G11B5/02
- IPC分类号： G11B5/02
摘要：
A magnetic recording method for a recording layer of a magnetic recording medium uses a thin film magnetic head with a sub-coil or a microwave radiator. In the method, a microwave spread spectrum (SS) signal is applied to the sub-coil or the microwave radiator, the microwave SS signal including a ferromagnetic resonant (FMR) frequency of the recording layer as a carrier wave within a band so as to generate an in-plane high-frequency magnetic field so that a magnetization reversal magnetic field Hsw of the recording layer is lowered. The magnetic recording is performed while the magnetization reversal magnetic field Hsw of the recording layer is lowered.
公开/授权文献
- US20120127610A1 MAGNETIC RECORDING METHOD USING MICROWAVE ASSISTED HEAD 公开/授权日：2012-05-24