S. Sreehari Sastry , B. Rupa Venkateswara Rao
A series of 20CaO-10ZnO-59.9P2O5-10Pb3O4-0.1x, (x= V2O5, Cr2O3, MnO and CuO) glasses was prepared by melt quench technique. Spectroscopic properties of the prepared glass systems were investigated using XRay diffraction, Ultra-Violet (UV) spectroscopy, Differential Scanning Calorimetry (DSC), Electron Paramagnetic Resonance (EPR – X band), Fourier Transform Infra Red (FTIR) spectroscopy and Raman spectroscopy. Present investigation is useful to study the effect of glass composition on the optical, thermal, physical properties and symmetry of the prepared glasses. Various physical properties for all the glasses were measured. X-ray diffraction of glass samples was carried to check its amorphous nature. From EPR spectra, the spin-Hamiltonian parameters were calculated and these parameters were influenced by the change in glass composition for different transition metal ions. The FTIR spectral investigations of glasses revealed characteristic vibrations of PO4 3- units. The Raman spectra of all glass samples have displayed different spectral bands, and intensity of these bands. The results showed that the network structure of these glass samples is found to be change from glass to glass
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