Abstract
This paper reports on the elastic properties of alkali borate glass systems (R 2O–B 2O 3, R=K, Rb, Cs). The elastic moduli were calculated in terms of Makishima–Mackenzie model and a model by Bridge et al. The average cross-link density, number of network bonds per unit volume, average stretching force constant, atomic ring size, and the ratio K bc/ K e, have been calculated and discussed according to bond compression model to analyze the borate anomaly. Young's modulus, packing density and Poisson's ratio have been calculated and analyzed according to Makishima–Mackenzie model. Debye temperature has been calculated and discussed in terms of the cross-link density of these glasses. The borate anomaly was discussed in terms of experimentally derived Debye temperature and theoretically calculated elastic moduli. The results showed good agreement between experimental and theoretical data for the borate anomaly representation.
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