Thermal Analyses, Spectral Characterization and Structural Interpretation of Nd~(3+)/Er~(3+) Ions Co-doped TeO_2-ZnCl_2 Glasses System

摘要

The Nd~(3+)/Er~(3+) ions co-doped in the system of zinc-tellurite with the composition of (70-2x)TeO_2-30ZnCl2-xNd_2O_3-xEr_2O_3 concentration from 1.0 to 3.0 mol% (x=l, 2 and 3) glasses were prepared by using conventional melt-quenching technique. The amorphous nature of the glass been confirmed by using X-RAY Diffraction Spectroscopy. Thermal characteristic were determined using a DTA. The obtained results discussed in terms of the glass structure. The glass structure studied by means of FTIR. Seven significant vibrational peaks around 471, 687, 742, 768, 1632, 2833 and 3378 cm~(-1) which correspond to the structural bonding of the glass are observed in a range of 400-4000cm~(-1). The peaks observed are consistent with the stretching and bending vibrations of the Te-O, TeO_4 trigonal bipyramids, TeO_3 trigonal pyramids, Te-O-Te and OH linkages respectively.