The Grüneisen parameter and Poisson coefficient for glassy organic polymers and inorganic glasses |
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| Authors: | B D Sanditov Sh B Tsydypov D S Sanditov V V Mantatov |
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| Institution: | (1) Buryat State University, ul. Smolina 24a, Ulan-Ude, 670000, Buryatia, Russia;(2) Buryat Scientific Center, Siberian Division, Russian Academy of Sciences, ul. M. Sakh”yanovoi 6, Ulan-Ude, 670047, Buryatia, Russia |
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| Abstract: | The Grüneisen lattice parameter has been calculated from the data on the Poisson coefficient for amorphous polymers and glasses. For glassy polymers, the thermodynamic Grüneisen parameter characterizes anharmonicity averaged over intrachain and other vibrational modes, the Grüneisen lattice parameter defines anharmonicity of interchain interactions provided by intermolecular interactions. In the case of alkali silicate glasses, the Grüneisen lattice parameter reflects the anharmonicity of vibrations of ionic sublattice that is formed by alkali-metal ions and nonbridging oxygen atoms. |
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