THE STRUCTURAL STUDIES OF Nd3+/Er3+: TeO2-Li2O-PbO GLASS SYSTEM
Abstract
Series of Nd3+/Er3+ co-doped tellurite glass of the TeO2-PbO-Li2O-Nd2O3-Er2O3 system was successfully been fabricated. The glass structure has been studied by means of FTIR and Raman spectroscopy. From the IR spectra, seven significant vibrational peaks around 467,664,746,1456,1643,2368 and 3445 nm which correspond to the structural bonding of the glass are observed in a range of 400-4000nm. The peaks observed are consistent with the stretching and bending vibrations of the Pb-O, TeO4 trigonal bipyramids, TeO3 trigonal pyramids, Te-O-Pb and M-OH linkages respectively. Weak bands which is observed at 1630 cm-1 is believed to be due to the M-OH group probably due to the OH trapped in the glass structure. The refractive indices are found to be around 1.91 and is strongly correlated to the glass structure.
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Copyright (c) 2026 Md Rahim Sahar, Md Supar Rohani, Azman Kasim (Author)

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