Research on Effect of Li2O on the Properties of Bismuth Borate Glasses

Melt quenching is used to make borate glasses with Li2O and a set concentration of the heavy metal oxide Bi2O3. The impact of Li2O on borobismuthate glasses has been investigated. Glass density increases somewhat as Li2O content increases, although molar volume and glass transition temperature decrease. Infrared spectroscopy was utilised to investigate the structural properties of these glasses in the 400 to 4000 cm1 range. Bi3+cations are included in the glass structure as (BiO6) octahedral units, while boron ions are included as (BO3) and (BO4) units, according to IR analysis. As the glass’s Li2O level rises, part of the BO3 trigonal units are changed to BO4 tetrahedral units, resulting in the formation of non-bridging oxygens. At room temperature, the optical transmittance spectra were recorded. With increasing Li2O content, the cut-off wavelength shifts red, the optical band gap narrows, and polarizability rises. Different physical parameters such as density, molar volume optical band gap, and optical basicity have been examined and connected with the glass structure as a function of composition.

Author(s) Details

V. D. Raut
Department of Applied Physics, G. H. Raisoni College of Engineering, Nagpur 440016, India.

A. V. Deshpande
Department of Applied Physics, Visvesvaraya National Institute of Technology, Nagpur, 440010, India.

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