Tellurite Glasses Containing Silver And Vanadium Oxides: Quantitative Analysis Of Elastic Moduli

Ring deformation and bond compression models are used to analyse quantitatively room temperature elastic moduli of x1Ag2O-x2V2O5-(1-x1-x2)TeO2 glass systems. The main parameters int he analysis are estimated atomic ring size, average crosslink density, first order stretching force constant and theoretical bond compression bulk modulus Kbc. Structural changes are deduced by relating the ratio Kbc/Ke to both molar volume and atomic ring size of glasses. It is found that increasing the Ag2O concentration opens the glass structure by breaking V-O-Te linkages and creating non-bridging oxygen atoms.