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Propagation velocity of longitudinal and transverse acoustic waves and anharmonicity of lattice oscillations |
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| Authors: | D S Sanditov A A Mashanov and M D Darmaev |
| Institution: | 1.Buryat State University, Ulan-Ude, 670000, Russia ;2.Department of Physical Problems, Buryat Scientific Center, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Buryatia, 670047, Russia ; |
| Abstract: | A linear correlation between the Grüneisen parameter and ratio of the velocities of longitudinal (ν l)and transverse (ν t) acoustic waves in crystals is found. It is assumed that velocities ν l and ν t are severally harmonic parameters, while their ratio ν l/ν t is an anharmonic quantity and depends on the ratio between the shear and flexural rigidities of interatomic bonds. |
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