Ultrasonic studies of (TeO2)50-(V2O5)50-x(TiO2)x glasses

New ternary tellurite glasses in the form (TeO2)(50)-(V2O5)(50-x)(TiO2)(x) have been prepared. Both longitudinal and shear ultrasonic velocities were measured in different compositions of the glass system by using the pulse-echo method at 5 MHz frequency and at room temperature. The elastic properties of ternary telluirte glasses (TeO2)(50)-(V2O5)(50-x)(TiO2)(x) were measured as a function of composition. The ultrasonic velocity data, the density, the calculated elastic moduli, micro-hardness, softening temperature, and Debye temperature depend on the glass composition. By calculating the number of network bonds per unit volume, the average stretching force constant, and the average ring size, information about the structure of the glass can be deduced. Comparison between the calculated and the experimental elastic moduli and Poisson's ratio have been carried out. (c) 2005 Elsevier B.V. All rights reserved.