Caustic of magnetoelastic waves in elastically isotropic ferromagnets

被引：7

作者：

Bakharev, S. M. ^{[1
]}

Borich, M. A. ^{[1
]}

Savchenko, S. P. ^{[1
]}

机构：

[1] Russian Acad Sci, Mikheev Inst Met Phys, Ural Branch, Ekaterinburg 620990, Russia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2021年 / 530卷 / 530期

关键词：

Caustic; Ferromagnet; Magnetoelasticity; Magnon; Phonon; Yttrium iron garnet; CRYSTALS; ENHANCEMENT; CONSTANTS;

D O I：

10.1016/j.jmmm.2021.167862

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The caustic of magnetoelastic waves (MEW) propagating in thick-film ferromagnets is investigated. The model of continuous medium is employed, and MEW are considered in the long wavelength approximation. It is shown that in thick-film samples the difference between the internal and external magnetic fields leads to a special form of the anisotropy of the MEW spectrum and, accordingly, to the appearance of a caustic. The possibility to control this phenomenon with the frequency of MEW is revealed. In particular, the directions and frequency ranges of the waves where the caustic occurs are obtained.

引用

页数：8

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