Reflection and refraction of acoustic waves at the boundary between a magnetoacoustic material and a dielectric

被引：0
|
作者：
M. M. Karpuk
D. A. Kostyuk
Yu. A. Kuzavko
V. G. Shavrov
机构：
[1] Politechnika Koszalinska,Institute of Radioengineering and Electronics
[2] Brest State Technical University,undefined
[3] Russian Academy of Sciences,undefined
来源：
Acoustical Physics | 2004年 / 50卷
关键词：
Radiation; Magnetic Field; Reflection; Anisotropy; Phase Transition;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Reflection and refraction of longitudinal and transverse acoustic waves at a plane boundary between an antiferromagnet and a dielectric are studied. The antiferromagnet is assumed to have an easy-plane anisotropy and to be in the state near the orientational phase transition in the magnetic field. A possibility of controlling the angles of the wave-type transformation upon reflection and the refraction angles, as well as all four coefficients of the wave transformation upon reflection and refraction, by the magnetic field is demonstrated. Conditions for the formation of the critical angles of internal reflection and the effect of the magnetic field on their values are specified. A possibility of the radiation of a grazing wave into the material bulk in the vicinity of the phase transition is analyzed.
引用
收藏
页码：544 / 551
页数：7
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