2015年5月18日
Underlayer material influence on electric-field controlled perpendicular magnetic anisotropy in CoFeB/MgO magnetic tunnel junctions
Physical Review B - Condensed Matter and Materials Physics
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- 巻
- 91
- 号
- 18
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.91.184410
- 出版者・発行元
- American Physical Society
We study the dependence of the perpendicular magnetic anisotropy on the underlayer material in magnetic tunnel junction. Using several different 4d and 5d metals we identify an optimal seed layer in terms of high anisotropy, low mixing, and high thermal stability. In such systems we investigate the tunability of the anisotropy by means of electric fields. Especially, by using W as the underlayer of the CoFeB/MgO/CoFeB trilayer we could obtain good thermal stability that allows for annealing in the temperatures up to 450?C, which results in high perpendicular anisotropy.
- ID情報
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- DOI : 10.1103/PhysRevB.91.184410
- ISSN : 1550-235X
- ISSN : 1098-0121
- SCOPUS ID : 84929577623