Quantitative Analysis on the Elastic Behaviour of Borotellurite Glass

Borotellurite glasses show potential application in nonlinear devices and are of interesting materials to he studied due to their low melting points, high refractive index, high dielectric constant and good infrared transmission. In this work, a systematic series of horotellurite glasses （B2O3）1-x （TeO2）x with x=0.6 - 0.80 were synthesized by rapid quenching. Longitudinal and shear ultrasonic velocities were measured in each horotellurite glass samples at room temperature and at 5 MHz frequency. Ultrasonic measurements were carried out by using the MBS8000 Ultrasonic Data Acquisition System. Densities of the glass samples were measured using displacement method while acetone was used as immersion liquid. Elastic constants were calculated as well as Poisson＇s ratio, Dehye temperature, softening temperatures and microhardness for all glass samples. Makishima-Mackenzie theory and bond compression model were applied to compare between the experimental elastic moduli data and the calculated theoretically.