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Synthesis and Characterization of Lithium Borate Glasses Containing La2O3

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Abstract

The glass series with general formula 15 Li2O–(85 − x) B2O3–x La2O3 was prepared. Electrical and optical properties of these glasses were studied. It is observed that the conductivity of these glasses decreases while density, glass transition temperature and refractive index increases with the addition of La2O3. Ion concentration of La3+ in glasses, polaron radius, field strength, molar refractivity and molar electronic polarizability were calculated. The absorption coefficient and direct optical band gaps are evaluated using the absorption edge calculations. The different factors that play a role for controlling the refractive indices such as electronic polarizability, field strength of cations and rigidity of glass structure are discussed in accordance with the obtained index data.

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Acknowledgments

One of the authors (D. D. Ramteke) thanks Visvesvaraya National Institute of Technology (V.N.I.T.), Nagpur for financial support through a PhD fellowship and Prof. V. K. Deshpande for providing lab facility.

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Authors and Affiliations

  1. Department of Applied Physics, Visvesvaraya National Institute of Technology, Nagpur, 440 010, India

    R. S. Gedam & D. D. Ramteke

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  1. R. S. Gedam
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  2. D. D. Ramteke
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Correspondence to R. S. Gedam.

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Gedam, R.S., Ramteke, D.D. Synthesis and Characterization of Lithium Borate Glasses Containing La2O3 . Trans Indian Inst Met 65, 31–35 (2012). https://doi.org/10.1007/s12666-011-0107-4

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