Dependence of the ratio of squares of the velocity of acoustic waves in solids on the Gruneisen parameter
It is found that in the Leont'ev and Belomestnykh-Tesleva formulas for the Grüneisen parameter, the right-hand sides of the equalities depend on anharmonicity through the dependence of the ratio of the squared acoustic wave velocities ( v L2 / v S2) on the Grüneisen parameter γ. The theoretical dependence of ( v L2 / v S2) on γ generally agrees with experimental data for both crystals and glassy solids. The quantity ( v L2 / v S2) turns out to be a single-valued function of the ratio of the tangential and normal stiffness of the interatomic bond.
Keywords
Gruneisen parameter, longitudinal and transverse velocities of acoustic waves, anharmonicity, Poisson's ratio, solids, Leontiev and Belomestnykh-Tesleva formulasAuthors
Name | Organization | |
Sanditov D.S. | Banzarov Buryat State University; Institute of Physical Materials Science SB RAS | sanditov@bsu.ru |
Badmaev S.S. | Banzarov Buryat State University | sayan75@mail.ru |
Mashanov A.A. | Banzarov Buryat State University | mashanov@bsu.ru |
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