Effect of ZnF2 and WO3 on elastic properties of oxyfluoride tellurite ZnF2–WO3–TeO2glasses: Theoretical analysis

摘要: Abstract The elastic properties of oxyfluoride tellurite glasses in the ternary system ZnF2-WO3 -TeO2 were analyzed and their changes when ZnF2 was replaced with TeO2 or WO3 were predicted. most significant structural compositional parameters were evaluated on basis well known models approaches existing field correlated both moduli Poisson's ratio. It has been found that molar volume, fractal bond connectivity, first-order stretching force constant Te–O W–O covalent bonds dissociation energy per unit volume constituent components play an important role determining predicting moduli. semi-empirical formula Abd El-Moneim Alfifi, which correlates bulk modulus ratio between packing density mean atomic appears to be valid for investigated glasses. On Makishima-Mackenzie's theory, agreement theoretically calculated experimentally measured values is excellent shear Young's satisfactory as longitudinal slight divergence theoretical experimental was interpreted terms basic units constituting glass network.