发明名称 |
Smoothing and stabilization of domain walls in perpendicularly polarized magnetic films |
摘要 |
A ferromagnetic film suitable for ultra-high density perpendicular recording, and a process for producing the film. The process generally entails forming a film of ferromagnetic material on a surface of a substrate, such that the film is characterized by perpendicular magnetic anisotropy and comprises a plurality of magnetic domains defined by domain walls perpendicular to a major surface of the film. The ferromagnetic film is formed to have a linear strain defect for the purpose of smoothing and stabilizing the domain walls during subsequent magnetization reversal of the ferromagnetic material. Such smoothing and stabilizing serves to control temporal magnetic noise due to motion of magnetic domains, arrest domain wall motion (reducing velocity) when the film is subjected to the magnetic reversal fields, and controls spatial magnetic noise due to domain wall jaggedness.
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申请公布号 |
US2002094457(A1) |
申请公布日期 |
2002.07.18 |
申请号 |
US20010916660 |
申请日期 |
2001.07.26 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
KRUSIN-ELBAUM LIA;SHIBAUCHI TAKASADA |
分类号 |
G11B5/00;G11B5/66;H01F10/16;H01F10/30;H01F10/32;H01F41/14;H01F41/32;(IPC1-7):G11B5/66 |
主分类号 |
G11B5/00 |
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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