Application of the environmental relaxation model to the ideal and non-ideal glass-forming molten mixtures

Abstract

The environmental relaxation model (ERM) was found to explain the viscosities, η, and the equivalent conductances, Λ, of inherent as well as of induced glass-forming melts belonging either to the category of ideal or to that of non-ideal systems. It was also found that, regardless of whether the non-ideal behaviour was due to the interactions resulting in the presence of either the tetrahedral, T_d, orthe octahedral, O_h, complex ions in the melt, the ERM explained the temperature dependence satisfactorily. The least-squares fits, plots and the comparison of the parameters obtained from several models suggest an overall applicability of the ERM to melts of varied nature as satisfactory.