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.

中文翻译：

---

表面磁弹性波在铁磁体中取向相变附近的传播

摘要

在各种外部磁场值和各种传播角度下，已经研究了群速度与磁弹性表面波阻尼的频率相关性。在发生表面波阻尼峰值的频率处观察到群速度爆发。还研究了取向相变附近的表面磁弹性波的行为。在相变点，组速度改变1％。沿表面在各种传播角度的阻尼依赖性表明了不可逆的波动性质。在这项工作中，所有的依赖关系都是通过计算机计算获得的，并且铁磁体参数被认为是铁钇石榴石的典型参数。