Relaxation Losses of Magnetic Excitations in Nanoscale Films of Yttrium Iron Garnet
- Authors: Lutsev L.V.1, Suturin S.M.1, Korovin A.M.1, Bursian V.E.1, Sokolov N.S.1
-
Affiliations:
- Ioffe Physical Technical Institute
- Issue: Vol 44, No 7 (2018)
- Pages: 558-561
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/207768
- DOI: https://doi.org/10.1134/S1063785018070118
- ID: 207768
Cite item
Abstract
Relaxation losses of magnetic excitations in nanoscale films of Y3Fe5O12 (YIG) were studied. The films were obtained by laser molecular-beam epitaxy (LMBE). Ferromagnetic resonance linewidth ΔH was found to increase sharply as the temperature decreased from 300 to 77 K. The observed growth of ΔH is explained by typical relaxation processes caused by the presence of Fe2+ ions. This effect is not observed in thick films of YIG grown by liquid-phase epitaxy and containing Pb4+ ions, and, hence, we have concluded that the presence of acceptor ions in YIG films obtained by LMBE will facilitate decreasing the concentration of Fe2+ ions and, a result, diminishing relaxation losses.
About the authors
L. V. Lutsev
Ioffe Physical Technical Institute
Author for correspondence.
Email: l_lutsev@mail.ru
Russian Federation, St. Petersburg, 194021
S. M. Suturin
Ioffe Physical Technical Institute
Email: l_lutsev@mail.ru
Russian Federation, St. Petersburg, 194021
A. M. Korovin
Ioffe Physical Technical Institute
Email: l_lutsev@mail.ru
Russian Federation, St. Petersburg, 194021
V. E. Bursian
Ioffe Physical Technical Institute
Email: l_lutsev@mail.ru
Russian Federation, St. Petersburg, 194021
N. S. Sokolov
Ioffe Physical Technical Institute
Email: l_lutsev@mail.ru
Russian Federation, St. Petersburg, 194021