发明名称 |
CoFe/Ni Multilayer film with perpendicular anistropy for microwave assisted magnetic recording |
摘要 |
A spin transfer oscillator with a seed/SIL/spacer/FGL/capping configuration is disclosed with a composite seed layer made of Ta and a metal layer having a fcc(111) or hcp(001) texture to enhance perpendicular magnetic anisotropy (PMA) in an overlying (A1/A2)X laminated spin injection layer (SIL). Field generation layer (FGL) is made of a high Bs material such FeCo. Alternatively, the STO has a seed/FGL/spacer/SIL/capping configuration. The SIL may include a FeCo layer that is exchanged coupled with the (A1/A2)X laminate (x is 5 to 50) to improve robustness. The FGL may include an (A1/A2)Y laminate (y=5 to 30) exchange coupled with the high Bs layer to enable easier oscillations. A1 may be one of Co, CoFe, or CoFeR where R is a metal, and A2 is one of Ni, NiCo, or NiFe. The STO may be formed between a main pole and trailing shield in a write head. |
申请公布号 |
US8300356(B2) |
申请公布日期 |
2012.10.30 |
申请号 |
US20100800196 |
申请日期 |
2010.05.11 |
申请人 |
ZHANG KUNLIANG;LI MIN;ZHOU YUCHEN;HEADWAY TECHNOLOGIES, INC. |
发明人 |
ZHANG KUNLIANG;LI MIN;ZHOU YUCHEN |
分类号 |
G11B5/235;G11B5/31;G11B5/39 |
主分类号 |
G11B5/235 |
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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