Thermal Gruneisen parameters of CdAl2O4, beta-Si2N4, and other phenacite-type compounds

The thermal expansion coefficients of a number of phenacites at temperatures at and above the Debye temperature are analyzed in terms of the thermal Gruneisen parameter gamma. The phenacites have gamma values intermediate between adamantine crystals and quartz. Values of gamma between 0.3 and 0.7 ar...

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Bibliographic Details
Published in:Journal of applied physics 1982-10, Vol.53, p.6817-6822
Main Authors: Slack, G A, Huseby, I C
Format: Article
Language:English
Online Access:Get full text
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Summary:The thermal expansion coefficients of a number of phenacites at temperatures at and above the Debye temperature are analyzed in terms of the thermal Gruneisen parameter gamma. The phenacites have gamma values intermediate between adamantine crystals and quartz. Values of gamma between 0.3 and 0.7 are found. A useful correlation exists between gamma and the average volume per anion bond W. Values of gamma approaching zero occur for sufficiently large values of W.
ISSN:0021-8979