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Perpendicular magnetic tunnel junction (p-MTJ) spin-valves designed with a top Co2Fe6B2 free layer and a nanoscale-thick tungsten bridging and capping layer

Title
Perpendicular magnetic tunnel junction (p-MTJ) spin-valves designed with a top Co2Fe6B2 free layer and a nanoscale-thick tungsten bridging and capping layer
Author
박재근
Keywords
ANISOTROPY; MAGNETORESISTANCE
Issue Date
2016-11
Publisher
NATURE PUBLISHING GROUP
Citation
NPG ASIA MATERIALS, v. 8, Page. 1-5, e324
Abstract
Recently, p-MTJ spin-valves with top Co2Fe6B2 free layers have been widely studied. They potentially experience crystallinity degradation in the face-centered-cubic (fcc) structure of the MgO tunneling barrier as a result of the diffusion of Ta atoms and a significant amount of Fe atoms from the Co2Fe6B2 free and pinned layers. A new design of the p-MTJ spin-valve using a nanoscale-thick W bridging and capping layer demonstrated the absence of significant crystallinity degradation in the fcc structure and showed a limited diffusion of Fe atoms, thus achieving a TMR ratio of similar to 143% at an ex-situ annealing temperature of 400 degrees C.
URI
https://www.nature.com/articles/am2016162http://repository.hanyang.ac.kr/handle/20.500.11754/101145
ISSN
1884-4049; 1884-4057
DOI
10.1038/am.2016.162
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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