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This article is cited in 5 scientific papers (total in 5 papers)
XXIII International Symposium ''Nanophysics and Nanoelectronics'', Nizhny Novgorod, March 11--14, 2019
Magnetism
Micromagnetic modeling of spin-wave excitations in corrugated YIG films
V. K. Sakharova, Yu. V. Khivintsevab, G. M. Dudkoa, S. L. Vysotskyab, Yu. A. Filimonovab a Saratov Branch of the Institute of Radio Engineering and Electronics
b Saratov State University
Abstract:
Particularities of the spin-wave spectrum in YIG film with the thickness of 0.4 $\mu$m and magnetization of 1.1 kG that was corrugated due to the periodical substrate relief in the form of grooves having width of 10 $\mu$m, depth of 0.5 $\mu$m, sloped walls and period of 20 $\mu$m were studied with the help of micromagnetic modelling. Calculations were carried out for the external magnetic field applied along ($\theta$ = 0) and across ($\theta$ = 90$^{\circ}$) the grooves in the film plane, and showed that the anisotropy from the film form caused the spectrum quantization and localization of spin-wave excitations in the different parts of the sample. Besides that, spacial distribution of magnetization amplitude at fixed frequencies in the spectrum for $\theta$ = 90$^{\circ}$ can be characterized by several spacial scales that differ by orders. This is explained by the strong inhomogeneity of equilibrium state at grooves' walls for $\theta$ = 90$^{\circ}$ that leads to the effective excitation of short-wave part of the spin-wave spectrum in the periodical structure by Schlömann mechanism.
Keywords:
magnonics, periodical magnetic structures, micromagnetic modeling, spin-wave spectrum.
Received: 15.04.2019 Revised: 22.04.2019 Accepted: 24.04.2019
Citation:
V. K. Sakharov, Yu. V. Khivintsev, G. M. Dudko, S. L. Vysotsky, Yu. A. Filimonov, “Micromagnetic modeling of spin-wave excitations in corrugated YIG films”, Fizika Tverdogo Tela, 61:9 (2019), 1652–1658; Phys. Solid State, 61:9 (2019), 1602–1608
Linking options:
https://www.mathnet.ru/eng/ftt8704 https://www.mathnet.ru/eng/ftt/v61/i9/p1652
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