Theoretically calculated elastic moduli of tellurite, phosphate and silicate glasses

Two empirical relations are reported relating to both the acoustic activation energy at low temperature and to the bulk modulus for oxide glasses, on the one hand, and to stretching force constant and atomic ring size of the network on the other. A comprehensive study was undertaken to examine the validity of these relations when applied to a large number of tellurite, phosphate and silicate glasses. Good agreement was obtained between experimentally measured values of elastic moduli, for the majority of the studied glasses, and those calculated theoretically according to our empirical relations. A correlation factor varying between 99 and 90\% for phosphate glasses, 94 and 85\% for tellurite glasses and 86\% for silicate glasses was obtained.