Dariush Souri

Abstract: The ternary TeO -V O -MoO amorphous samples of compositions in the range (0-60) mol% MoO 2 2 5 3 3 with constant amount of TeO equal to 40 mol% have been prepared by melt quenching technique. FTIR spectra 2 of pure TeO , V O , MoO powders and TeO -V O -MoO glass system were taken. The absorption bands in 2 2 5 3 2 2 5 3 the FTIR spectra of theses glasses are not characteristics of the mere oxide mixture, thus a chemical interaction between the three oxide materials. The similarity between the FTIR spectra of all glasses indicates a similarity in the network of these glasses and it is suggested that the glass structure is continuous tellurite network with vanadate and molybdate discontinuous. Also, the experimental DSC curves of mentioned glass systems have been investigated. The composition dependence of glass transition temperature implies a decrease in the rigidity of the network with increasing of V O content.