2020 Fiscal Year Annual Research Report
Magnon-phonon hybridization in nearly compensated magnets for thermoelecric conversion and heat control
Project/Area Number |
20K05297
|
Research Institution | Tohoku University |
Principal Investigator |
RAMOS Rafael 東北大学, 材料科学高等研究所, 助教 (40839312)
|
Project Period (FY) |
2020-04-01 – 2021-03-31
|
Keywords | Spintronics / Magnons / Phonons / spin Seebeck / magnetic compensation |
Outline of Annual Research Achievements |
The project deals with the investigation of spin-lattice interaction effects in magnetic insulators, in particular the effect of magnetic compensation on spin-heat conversion (spin Seebeck effect: SSE) in Ga-substituted yttrium iron garnet (Ga-YIG), with increasing Ga-substitution the magnetic compensation increases. I optimized the growth of high-quality Ga-YIG by liquid phase epitaxy, the structural quality was confirmed by x-ray diffraction. The presence of peaks in the SSE voltage at lower magnetic field than in YIG confirm the larger compensation and high magnetic quality of the films. Further spin transport studies on the grown films are to be performed to investigate the role of magnetic compensation on magnon-phonon hybridization and its effect on the spin-heat conversion properties.
|
-
-
-
[Journal Article] Identification of Neel vector orientation in antiferromagnetic domains switched by currents in NiO/Pt thin films2020
Author(s)
C. Schmitt, L. Baldrati, L. Sanchez-Tejerina, F. Schreiber, A. Ross, M. Filianina, S. Ding, F. Fuhrmann, R. Ramos, F. Maccherozzi, D. Backes, E. Saitoh, G. Finocchio, M. Klaui
-
Journal Title
arXiv
Volume: 2008.08507
Pages: -
Int'l Joint Research
-
-