1982 Volume 90 Issue 1044 Pages 476-481
The heat capacities of several alkali aluminosilicate glasses were measured at 77 to 300K. The experimental results of these glasses were analyzed using the three-band theory. The characteristic temperatures (θ1, θ3, θE) obtained were used to determine the nature of atomic interactions in glasses. The behaviour of the Gruneisen parameter γ(T) obtained by using the result of heat capacity, thermal expansion coefficient, density and bulk modulus for alkali aluminosilicate glasses was not depending on alkali content, which was different from alkali silicate glasses. The behaviors of these parameters are considered to be due to the lack of non-bridging oxygen in aluminosilicate glasses.
