Correlation between acoustical and structural parameters in some oxide glasses

Abstract Correlation between acoustical and structural parameters has been carried out in TiO 2 –Na 2 O–CaO–P 2 O 5 , ZnO–PbO–B 2 O 3 and BaO–TeO 2 glass systems. The correlation is based on the recently presented Abd El-Moneim semi-empirical formulas, which relate the room temperature ultrasonic attenuation coefficient with oxygen density, average atomic ring size, first-order stretching force constant and experimental bulk modulus of the glass. Fractal bond connectivity and mean atomic volume have also been evaluated and interpreted in terms of composition to deduce changes in the structure of the glass. Furthermore, values of the theoretical bulk modulus have been calculated on the basis of Rocherulle et al. model and compared with the corresponding observed values. It has been found that, majority of the studied glass samples have two-dimensional structure and the network strength changes in the order BaO–TeO 2 glasses ≺ TiO 2 –Na 2 O–CaO–P 2 O 5 glasses ≺ ZnO–PbO–B 2 O 3 glasses. Abd El-Moneim semi-empirical formulas can be applied successfully to predict changes of ultrasonic attenuation coefficient in these glasses at room temperature. Also, Rocherulle et al. model is valid for majority of the investigated glass samples.