Abstract

An earlier published concept, showing correlations between the “average lattice energy” of glasses (i.e. their mean molar atomization enthalpy ΔA H at 298 K), the network dimensionalityD and some properties of different chalcogenide and oxide glasses, was used to interpret the transformation temperaturesT g of glasses containing fluorine or nitrogen instead of oxygen. A plot of Tg vs. ΔA H allows the comparison of completely different glasses from only one graph. Such a consistent evaluation of composition/property relationships is useful for the further improvement of fluoride and nitride glasses, which are important for applications in optics and telecommunications and as quality-limiting components in silicon nitride-based ceramics.

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