Strength of Perpendicular Magnetic Anisotropy at Bottom and Top Interfaces in [Pt/Co/Pt] Trilayers

被引：18
|
作者：
Lee, T. Y. [1 ]
Won, Y. C. [1 ]
Son, D. S. [2 ]
Lim, S. H. [1 ,2 ]
Lee, S. -R. [2 ]
机构：
[1] Korea Univ, Dept Nano Semicond Engn, Seoul 136713, South Korea
[2] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea
来源：
IEEE MAGNETICS LETTERS | 2014年 / 5卷
基金：
新加坡国家研究基金会;
关键词：
Magnetism in solids; Pt/Co/Pt trilayers; perpendicular magnetic anisotropy; interfacial anisotropy; thickness effects;
D O I：
10.1109/LMAG.2014.2321350
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The individual strengths of perpendicular magnetic anisotropy (PMA) at the bottom and top interfaces in sputtered [Pt/Co/Pt] trilayers are determined. The PMA strength from the top Co/Pt interface is significantly weaker than that from the bottom Pt/Co interface, indicating a similar difference in the interface quality. The contribution to the total anisotropy strength from the top Co/Pt interface increases with decreasing top Pt layer thickness; for a stack of Co thickness 1 nm, the contribution is only 10% for a top Pt layer of thickness 3.0 nm, but it increases to 32% for a Pt layer of thickness 0.2 nm.
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页数：4
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