发明名称 |
System, method and apparatus for strain-assisted magnetic recording for controlling switching field and tightening switching field distribution in bit patterned media |
摘要 |
Multilayer magnetic structures control the switching field and tighten the switching field distribution in bit patterned media. A strain-inducing layer is excited, e.g., by a localized magnetic field or a localized thermal heating or a voltage, and induces a strain on the magnetic layer(s) of the patterned bit to initiate switching of the bit magnetization. The strain induced on the magnetic layer forces a rotation or an amplitude variation of the magnetic layer anisotropy. A localized magnetic field is simultaneously or subsequently applied to complete the switching of the bit magnetization. The invention provides control of switching field and switching field distribution for bit-patterned media devices. |
申请公布号 |
US8129043(B2) |
申请公布日期 |
2012.03.06 |
申请号 |
US20090423258 |
申请日期 |
2009.04.14 |
申请人 |
HAUET THOMAS;HELLWIG OLAV;HUANG LIDU;HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. |
发明人 |
HAUET THOMAS;HELLWIG OLAV;HUANG LIDU |
分类号 |
G11B5/66 |
主分类号 |
G11B5/66 |
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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