Solid State Science and Technology, Vol. 17, No 1 (2009) 22-30

ISSN 0128-7389

 THE STRUCTURAL STUDIES OF Er3+: TeO2-Li2O-PbO-Nd2O3 GLASS SYSTEM

Md Rahim Sahar, Md Supar Rohani and Azman Kasim

Advanced Optical Material Research Group, Physics Dept., Faculty of Science

Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Darul Takzim

 

ABSTRACT

Series of Er3+ doped tellurite glass of the TeO2-PbO-Li2O-Nd2O3-Er2O3 system was successfully been made. The glass structure has been studied by means of FTIR and Raman spectroscopy. 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 band 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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