Abstract
Physical and spectral studies of vanadium doped strontium titanium boro-tellurite glasses have investigated by XRD, SEM, optical, EPR & FTIR spectroscopies. The optical absorption spectra demonstrate two transitions related to 2B1g→2B2g and 2B1g→2E2g energies, which are characteristic features of VO2+ ions. From the optical edge and Tauc relation, the Urbach energies and optical band gap values have calculated. The X-band EPR spectra (experimental and simulated) confirms the non-linear variation of the ligand field around the V4+ ions. From perturbation theory, the theoretical Hamiltonian parameters have been calculated and compared with experimental EPR results. FTIR spectroscopy is evident that the role of SrO on the local structure of strontium titanium boro-tellurite glasses containing vanadium ions.
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