Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran

Glasses in the system xNd2O3.(10-x)In2O3.90Na2B4O7 system (with x = 0,1,3,5 mol%) were fabricated via melt quenching technique. The amorphous nature of the quenched glasses was confirmed by X-ray powder diffraction studies. The infrared spectra of the glasses show no boroxol ring formation in the structure of these glasses. Optical absorption of glasses show that the transition 4G5/2+2G7/2 ← 4I9/2 is more intense than the other transitions , that shifts from 580 nm (for the free Nd+3 ion ) to 584 nm. The peak in fluorescence spectra for x = 5 mol% Nd+3 in the region 800-900 nm under excitation wavelength 584 nm is attributed for 4F3/2 → 4I9/2 transition. Differential thermal analysis for (x = 5 mol% Nd+3 ) is shown glass transition (~ 600?C) and crystallization temperatures (~1155,975?C). The scanning electron microscopy studies indicating the amorphous state of glass sample.