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Anharmonicity and the Ratio of Sound Velocity Squares in Glassy Solids

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Abstract

The dependence of the ratio of the squared velocities of longitudinal and transverse acoustic waves \(\frac{{{v}_{{\text{L}}}^{{\text{2}}}}}{{{v}_{{\text{S}}}^{{\text{2}}}}}\) on Grüneisen parameter γ, which is the measure of anharmonicity, and that agrees with the experimental data has been obtained. The quantity \(\frac{{{v}_{{\text{L}}}^{{\text{2}}}}}{{{v}_{{\text{S}}}^{{\text{2}}}}}\) turns out to be a single-valued function of the ratio of the tangential and normal stiffness of the interatomic bond.

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Authors and Affiliations

  1. Banzarov Buryat State University, 670000, Ulan-Ude, Russia

    D. S. Sanditov & A. A. Mashanov

  2. Institute of Physical Materials Science, Siberian Branch, Russian Academy of Science, 670047, Ulan-Ude, Russia

    D. S. Sanditov

Authors
  1. D. S. Sanditov
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  2. A. A. Mashanov
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Correspondence to D. S. Sanditov or A. A. Mashanov.

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Translated by N. Podymova

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Sanditov, D.S., Mashanov, A.A. Anharmonicity and the Ratio of Sound Velocity Squares in Glassy Solids. Dokl. Phys. 66, 67–71 (2021). https://doi.org/10.1134/S1028335821020063

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  • DOI: https://doi.org/10.1134/S1028335821020063

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