发明名称 |
Method for producing nanoparticle layer having uniform easy axis of magnetization, magnetic recording medium having such layer, its production method, and its production apparatus |
摘要 |
The magnetic recording medium provided is produced by forming a substrate having a nanoparticle layer comprising an array of nanoparticles, and an organic compound between said array of nanoparticles; irradiating the nanoparticle layer with an infrared beam to magnetize the nanoparticles; applying a magnetic field to the nanoparticle layer to orient easy axis of magnetization of the magnetic nanoparticles in a substantially uniform direction; and irradiating the nanoparticle layer with an ultraviolet beam to bind said organic compound to thereby produce a magnetic recording medium wherein easy axis of magnetization of the nanoparticles has been oriented in a direction substantially parallel to a direction at a particular angle with the substrate. The resulting magnetic recording medium experiences no deterioration of the underlying layer or the soft magnetic layer, and exhibits good magnetic properties.
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申请公布号 |
US2006246227(A1) |
申请公布日期 |
2006.11.02 |
申请号 |
US20060475013 |
申请日期 |
2006.06.27 |
申请人 |
HITACHI, LTD. |
发明人 |
TSUCHIYA YUKO;TERAO MOTOYASU |
分类号 |
G11B5/706;H01F1/00;G11B5/00;G11B5/012;G11B5/64;G11B5/70;G11B5/702;G11B5/82;G11B5/84;G11B5/842;G11B5/845;G11B5/852;G11B11/105;H01F10/12;H01F41/16 |
主分类号 |
G11B5/706 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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