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Spectroscopic and Bonding Properties as A Probe in the Symmetry of PbO-P2O5-ZnOV2O5 Glass System With Alkali Oxides

S. Sreehari Sastry, MVVK. Srinivas Prasad, B. Rupa Venkateswara Rao

PbO-P2O5-ZnO-V2O5 glasses composed of different alkali oxides are prepared. The glasses are characterized by XRD, FTIR, EPR and UV-Visible spectral analysis. The functions of structural features and amorphous nature due to compositional changes are examined using XRD. FTIR spectroscopy is used to identify the presence of bond assignments and vibrational modes of phosphate in the system. Depolymerization of the phosphate network by the replacement of alkali oxide content in the glasses which are consisting mainly more of (PO4 3-) and (PO3 2-) units, is detected by the FTIR spectra. The spectral studies have exhibited an intense and broadband in the visible region which is related to VO2+ ions in a ligand field of C4v symmetry. The importance of bridging oxygen in improving the optical properties is studied.