Temperature-dependent magnetic damping of yttrium iron garnet spheres
Maier-Flaig H, Klingler S, Dubs C, Surzhenko O, Gross R, Weiler M, Huebl H, Goennenwein STB (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 95
Article Number: 214423
Journal Issue: 21
DOI: 10.1103/PhysRevB.95.214423
Abstract
We investigate the temperature-dependent microwave absorption spectrum of an yttrium iron garnet sphere as a function of temperature (5 to 300K) and frequency (3 to 43.5GHz). At temperatures above 100K, the magnetic resonance linewidth increases linearly with temperature and shows a Gilbert-like linear frequency dependence. At lower temperatures, the temperature dependence of the resonance linewidth at constant external magnetic fields exhibits a characteristic peak which coincides with a non-Gilbert-like frequency dependence. The complete temperature and frequency evolution of the linewidth can be modeled by the phenomenology of slowly relaxing rare-earth impurities and either the Kasuya-LeCraw mechanism or the scattering with optical magnons. Furthermore, we extract the temperature dependence of the saturation magnetization, the magnetic anisotropy, and the g factor.
Involved external institutions
Germany (DE)How to cite
APA:
Maier-Flaig, H., Klingler, S., Dubs, C., Surzhenko, O., Gross, R., Weiler, M.,... Goennenwein, S.T.B. (2017). Temperature-dependent magnetic damping of yttrium iron garnet spheres. Physical Review B, 95(21). https://doi.org/10.1103/PhysRevB.95.214423
MLA:
Maier-Flaig, H., et al. "Temperature-dependent magnetic damping of yttrium iron garnet spheres." Physical Review B 95.21 (2017).
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