Theoretical analysis for ultrasonic properties of vanadate glasses over a wide range of composition
DOI: 10.1016/J.JNONCRYSOL.2018.06.010
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摘要: Abstract The various ultrasonic properties of PbO-V2O5, MoO3-PbO-V2O5, P2O5-V2O5, and CuO-P2O5-V2O5 TeO2-K2O-V2O5 glass systems were analyzed predicted over a wide range composition. theoretical elastic moduli Poisson's ratio evaluated on the basis Makishima–Mackenzie's theory Rocherulle et al. model compared with corresponding experimental ones. composition dependence attenuation coefficient in PbO-V2O5 glasses has also been predicted, for first time, using Abd El-Moneim's semi-empirical formula, which correlates room temperature packing density, dissociation energy per unit volume average first-order stretching force constant. results revealed that: i- agreement between is excellent majority samples; ii- correlation MoO3-PbO-V2O5 improved significantly when effect basic structural units VO5 VO4 taken into account; iii- formula appears to be valid glasses. coefficient, density was achieved through constant V–O–V linkages.
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