Calculation of the Heat Capacity of α Quartz and Vitreous Silica from Spectroscopic Data

Publisher Website
Google Scholar
Abstract
The heat capacity of α‐quartz has been computed over the temperature range 10–700°K, and that of vitreous silica from 10° to 900°K. Debye θ's obtained from the T3 law below 10° were used for the ``translational'' degrees of freedom, and recent infrared and Raman data for the other frequencies. Cp—Cv was negligible for vitreous silica and was computed from compressibility and thermal‐expansion data for α‐quartz. Agreement with new Cp measurements is excellent for α‐quartz (within 1% above 60°K) but is less satisfactory for vitreous silica because of inadequate knowledge of the distribution of frequencies below 500 cm—1.

This publication has 4 references indexed in Scilit: