Open AccessFeatures of focusing magnetoelastic waves in YIG crystals
Author(s) -
С. М. Бахарев,
M. A. Borich,
S. P. Savchenko
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1389/1/012096
Subject(s) - caustic (mathematics) , wavelength , anisotropy , condensed matter physics , crystal (programming language) , phonon , optics , resonance (particle physics) , materials science , point (geometry) , physics , atomic physics , geometry , mathematics , computer science , mathematical physics , programming language
The focusing features and caustic of magnetoelastic waves in Y 3 Fe 5 O 12 (YIG) crystals in the long wavelength approximation are investigated. It is shown that the interaction of phonon and magnetic subsystems leads to pronounced anisotropic properties of magnetoelastic waves. Four magnetoelastic eigenmodes are realized in the crystal, and two of them possess a focusing and caustic in the vicinity of magnetoelastic resonance point. The region of frequencies and wavenumbers of magnetoelastic waves is obtained, where the caustic can be observed. The directions of the focusing and caustic are defined.