发明名称 |
Light-assisted type magnetic recording head, magnetic recording apparatus and laser-assisted type magnetic recording head manufacturing method |
摘要 |
A laser assisted type magnetic recording head forming a magnetic recording apparatus includes a focusing lens system including an objective lens and a hemispherical or hyper-hemispherical lens and whose effective numerical aperture is greater than 1.0. A recording thin-film magnetic head is built in the inside of the hemispherical or hyper-hemispherical lens. A magnetic recording head and a magnetic recording apparatus are able to record information on a magnetic recording medium while the coercive force of only a predetermined recording portion of the magnetic recording medium can be lowered but a temperature can be prevented from being lowered before magnetic fields are applied.
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申请公布号 |
US2006114756(A1) |
申请公布日期 |
2006.06.01 |
申请号 |
US20050268086 |
申请日期 |
2005.11.07 |
申请人 |
SONY CORPORATION |
发明人 |
KOJIMA NAOTO;IDE NAOKI;KANEKO MASAHIKO |
分类号 |
G11B11/00 |
主分类号 |
G11B11/00 |
代理机构 |
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代理人 |
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主权项 |
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