Quantitative analysis of ultrasonic attenuation and activation energy of thermal relaxation in WO3-PbO-TeO2 glasses

A comprehensive quantitative analysis has been carried out on the acoustical properties of 20WO(3)-xPbO-(80-x)TeO2 glasses to study the correlation between the acoustical and structural properties of these glasses. The analysis is based on the Bridge \& Patel model, ring deformation model, bond compression model and Abd El-Moneim model. It has been found that the average crosslink density, oxygen density, atomic ring size, first order stretching force constant and bulk modulus are the most effective parameters in explaining the composition dependence of the acoustic activation energy of thermal relaxation process at low temperature. Correlation between room temperature ultrasonic attenuation and frequency was also achieved through the experimental bulk modulus and structural parameters. Finally, two semi-empirical formulas were reported to predict the ultrasonic attenuation in these glasses.