Physical and Optical Properties of Borobismuthate Glasses Containing Vanadium Oxide
Pavan Kumar Pothuganti, Ashok Bhogi, Muralidhara Reddy Kalimi, Padamasuvarna Reniguntla
Abstract
Abstract Glasses with compositions 20BaO · 10Bi2O3 · (70 – x)B2O3 · xV2O5 with x = 0, 0.2, 0.4, 0.6, 0.8 and 1 mol % were prepared by melt quenching technique. The amorphous nature was established by X-ray diffraction studies. Fourier transform infrared studies carried out for samples and it exhibit absorption bands for oxides in various structural units. Physical parameters viz., density, molar volume, molar refraction, dielectric constant, electro negativity, polaron radius and oxygen packing density were calculated. Theoretical optical basicity was estimated and is increasing with vanadium content shows increasing polarizability of samples. Metallization criterion decreases shows the metallic nature of samples, this implies that prepared glass samples can be used as amorphous semiconductors and could be used in electronics and memory switching devices. Using UV-vis spectra optical band gap energy (Eopt) calculated and is decreased from 2.998–2.453 eV, linear refractive index is measured from Eopt. Increase in Urbach energy (Eu) with vanadium component is observed.