| Autor: |
Mel’nichenko, T. N. |
| Zdroj: |
Inorganic Materials; May 2000, Vol. 36 Issue: 5 p496-501, 6p |
| Abstrakt: |
It is shown that the free-volume approach offers the possibility of taking into account the anharmonicity of vibrations and nonlinearity of interatomic interactions in glassy arsenic chalcogenides. The Grüneisen parameters calculated by different formulas are compared, and the bond-breaking strain is correlated with the maximum possible bond elongation. The elementary atomic displacement in the structure of the glasses is evaluated. The ratio of the fraction of fluctuation-induced free volume to the lattice Grüneisen parameter in glassy arsenic chalcogenides is shown to differ from that in silicate glasses. The parameters of the free-volume model are correlated with those of the models relying on the present-day views of the structure of chalcogenide glasses. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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