This article is cited in 1 paper

Lattice dynamics

Elastic properties of FeGe$_{2}$ single crystal

R. I. Zainullina, M. A. Milyaev

Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, Ekaterinburg

Abstract: The results of the investigation of temperature dependences of longitudinal and torsional sound wave velocities and the internal friction of FeGe$_{2}$ tetragonal single crystal along [100], [110] and [001] crystallographic axes have been presented. At temperatures of magnetic phase transitions of $T_{1}\approx$ 263 K and $T_{2}\approx$ 289 K an abrupt decrease of sound velocities is observed. The profound anisotropy of the internal friction is detected in the region of the existence of incommensurate magnetic structure $(T_1\le T\le T_2)$.

Received: 27.02.2019
Revised: 27.02.2019
Accepted: 05.03.2019

DOI: 10.21883/FTT.2019.07.47847.394

 English version: Physics of the Solid State, 2019, 61:7, 1278–1283

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