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Fizika Tverdogo Tela, 2020 Volume 62, Issue 6, Pages 851–854 (Mi ftt8393)

International conference ''Phase transitions, critical and nonlinear phenomena in condensed matter'', Makhachkala, September 15-20, 2019
Magnetism

Propagation of a surface magnetoelastic wave in a ferromagnet near the orientation phase transition

I. V. Maltseva, I. V. Bychkovab, D. A. Kuzminab, V. G. Shavrovc

a Chelyabinsk State University
b South Ural State University, Chelyabinsk
c Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow

Abstract: The frequency dependences of the group velocity and the damping of a magnetoelastic surface wave have been studied at various values of an external magnetic field and various angles of propagation. The group velocity bursts are observed at frequencies, at which peaks of surface wave damping take place. The behavior of a surface magnetoelastic wave is also studied near the orientation phase transition. In the phase transition point, the group velocity is changed by 1%. The dependences of the damping along the surface at various angles of propagation indicate the nonreciprocal wave nature. In this work, all the dependences have been obtained using computer calculations and the ferromagnet parameters are taken to be typical for iron–yttrium garnet.

Keywords: ferromagnetic, magnetoelastic, phase transition, surface waves.

Received: 30.12.2019
Revised: 30.12.2019
Accepted: 10.01.2020

DOI: 10.21883/FTT.2020.06.49336.36M


 English version:
Physics of the Solid State, 2020, 62:6, 959–962

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