发明名称 |
ENGINEERED MAGNETIC LAYER WITH IMPROVED PERPENDICULAR ANISOTROPY USING GLASSING AGENTS FOR SPINTRONIC APPLICATIONS |
摘要 |
A magnetic element is disclosed wherein first and second interfaces of a free layer with a perpendicular Hk enhancing layer and tunnel barrier, respectively, produce enhanced surface perpendicular anisotropy to increase thermal stability in a magnetic tunnel junction (MTJ). The free layer may be a single layer or a composite and is comprised of one or more glassing agents that have a first concentration in a middle portion thereof and a second concentration less than the first concentration in regions near first and second interfaces. As a result, a CoFeB free layer, for example, selectively crystallizes along first and second interfaces but maintains an amorphous character in a middle region containing a glass agent providing the annealing temperature is less than the crystallization temperature of the middle region. The magnetic element may be part of a spintronic device or serve as a propagation medium in a domain wall motion device. |
申请公布号 |
EP2820680(A4) |
申请公布日期 |
2015.10.28 |
申请号 |
EP20120869818 |
申请日期 |
2012.12.18 |
申请人 |
HEADWAY TECHNOLOGIES, INC.;WANG, YU-JEN;TONG, RU-YING;JAN, GUENOLE |
发明人 |
WANG, YU-JEN;TONG, RU-YING;JAN, GUENOLE |
分类号 |
H01L43/10;H01L43/08;H01L43/12 |
主分类号 |
H01L43/10 |
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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