Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session X45: Magnetic Anisotropy: Hard and Soft Materials
11:15 AM–1:51 PM,
Friday, March 6, 2020
Room: 706
Sponsoring
Unit:
GMAG
Chair: Scooter Johnson, U.S. Naval Research Laboratory
Abstract: X45.00001 : First-principles calculations on the surfaces and interfaces of SmFe12*
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Abstract
Presenter:
Tomoharu Shiozawa
(Department of Materials Science and Engineering, Tokyo Institute of Technology)
Authors:
Tomoharu Shiozawa
(Department of Materials Science and Engineering, Tokyo Institute of Technology)
Yuta Ainai
(Department of Materials Science and Engineering, Tokyo Institute of Technology)
Yasutomi Tatetsu
(University Center for Liberal Arts Education, Meio University)
Yoshihiro Gohda
(Department of Materials Science and Engineering, Tokyo Institute of Technology)
We performed first-principles calculations on the surfaces and interfaces of Nd2Fe14B and SmFe12, and analyzed the structural stability and magnetic properties. The surface energies of SmFe12 and Nd2Fe14B are examined to find the most stable surfaces. Then, the interface of SmFe12 with a subphase is constructed using the most stable surface structures. For stable interface structures, the magnetic properties are examined, where the magnetic moment of Fe is enhanced around the interface of SmFe12/SmCu. We will also present the results on the magnetic anisotropy and the magnetic coupling at SmFe12-based interfaces.
*This work was partially supported by ESICMM funded by MEXT (Grant No. 12016013).
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