Structure Investigation Of Bi2o3–Sio2 Glass Employing Ultrasonic Study

Glasses with composition (100–x) Bi2O3–xSiO2 (where x = 38, 41, 44, 47 and 50 mol %) have been prepared using the melt quench technique. The ultrasonic velocities (both longitudinal and transverse) were measured at 10 MHz at room temperature using the pulse echo overlap method. The physical parameter such as density, elastic constants and other parameters like Poisson’s ratio, acoustic impedance, microhardness, Debye temperature and thermal expansion coefficient have been evaluated. The variations in these parameters are analyzed in terms of structural changes in the glass network with composition. The amorphous nature of the glass samples are studied using XRD in the glass samples.