Long wavelength optical mode frequencies and the Anderson–Gruneisen parameter for alkali halide crystals
- 15 February 1980
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 72 (4) , 2656-2658
- https://doi.org/10.1063/1.439410
Abstract
The relation between long wavelength optical mode frequencies and the Anderson–Gruneisen parameter δ for alkali halides studied by Madan suffers from a mathematical error which is rectified in the present communication. A theoretical analysis of δ is presented adopting six potential functions for the short range repulsion energy. Values of δ and γTO calculated from the Varshni–Shukla potential are found in closest agreement with experimental data.Keywords
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