박재근
2019-03-25T04:39:51Z
2019-03-25T04:39:51Z
2016-11
NPG ASIA MATERIALS, v. 8, Page. 1-5, e324
1884-4049
1884-4057
https://www.nature.com/articles/am2016162
https://repository.hanyang.ac.kr/handle/20.500.11754/101145
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.
This work was supported by a Basic Science Research Program grant from the National Research Foundation of Korea (NRF), which was funded by the Korean government (MSIP; No. 2014R1A2A1A01006474), and the Brain Korea 21 PLUS Program in 2014.
en
NATURE PUBLISHING GROUP
ANISOTROPY
MAGNETORESISTANCE
Perpendicular magnetic tunnel junction (p-MTJ) spin-valves designed with a top Co2Fe6B2 free layer and a nanoscale-thick tungsten bridging and capping layer
Article
8
10.1038/am.2016.162
1-5
NPG ASIA MATERIALS
Lee, Seung-Eun
Shim, Tae-Hun
Park, Jea-Gun
2016009160
S
COLLEGE OF ENGINEERING[S]
DEPARTMENT OF ELECTRONIC ENGINEERING
parkjgl