发明名称 |
Magnetic recording head and magnetic recording/reproducing apparatus |
摘要 |
In high frequency magnetic assisted recording technique, a spin torque oscillator that stably oscillates at a low current and a magnetic recording head with high recording density are provided. In a magnetic recording head including an oscillator that generates a high frequency magnetic field, a spin injection layer structure of two laminated magnetic layers which are coupled to be anti-parallel is adopted. A product Ms×t of the saturated magnetization Ms and the film thickness t of the first magnetic layer close to a field generation layer is smaller than a product Ms×t of the second magnetic layer remote from the field generation layer.
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申请公布号 |
US8537497(B2) |
申请公布日期 |
2013.09.17 |
申请号 |
US201213402949 |
申请日期 |
2012.02.23 |
申请人 |
NAGASAKA KEIICHI;SHIIMOTO MASATO;SATO YO;HITACHI, LTD. |
发明人 |
NAGASAKA KEIICHI;SHIIMOTO MASATO;SATO YO |
分类号 |
G11B5/31;G11B5/02;G11B5/23 |
主分类号 |
G11B5/31 |
代理机构 |
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主权项 |
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地址 |
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