In this work, the role of europium doping of glasses formulated in the ternary system ZnO-CdO-TeO2 is described. The Eu-doped oxide glasses were prepared by the conventional melt quenching method and by using three different compositions. Structural studies reveal that there exists a good affinity between Cd and some rare earth ions to form the crystalline phase. The X-ray diffraction diagrams display that the structure of these glasses is amorphous and with the increase in CdO content and the compatibility of Eu3+, there is a tendency to form nanocrystals of CdTe2O5. The SEM observation of their microstructure confirms the presence of phase separation. Differential thermal analysis of these glasses showed small exothermic peaks noted around 450 deg C for the V2 glass and 480 deg C for V1 and V3 glasses, which could be attributed to the formation of these crystals.
