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FTIR AND SOME PHYSICAL PROPERTIES OF ALKALINE EARTH BORATE GLASSES CONTAINING HEAVY METAL OXIDES

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Author(s): RAMADEVUDU.G | LAXMI SRINIVASA RAO. S | ABDUL HAMEED | SHAREEFUDDIN.MD | NARASIMHA CHARY.M

Journal: International Journal of Engineering Science and Technology
ISSN 0975-5462

Volume: 3;
Issue: 9;
Start page: 6998;
Date: 2011;
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Keywords: Glass | alkaline earth borate glasses | infrared spectrum | glass transition temperature

ABSTRACT
The FTIR spectra of heavy metal oxide doped borate glasses with the general formula RO-MO-B2O3 (RO= MgO, CaO, SrO and BaO, MO=ZnO, TeO2, PbO and Bi2O3) were studied in the spectral range 400-4400cm-1 toobtain information about the influence of the glass composition on the spectra. The FTIR studies revealed that MO acted differently in RO-B2O3 glass matrix and produced small variations in the glass structure. RO oxides also affected the glass structure slightly due to mixed oxide effect. However the structural groupings present ineach series of glasses are not much affected by the composition. The effect of composition on some physical properties like density, molar volume was also carried out. The increase in the values of physical parameters such as density and glass transition temperature is attributed to conversion of [BO3]3- triangular units into BO4-tetrahedral units.
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