Preparation and Characterization of Niobium Doped Lead-Telluride Glass Ceramics

Niobium-lead-telluride glass ceramics of composition xNb(2)O(5)-(20-x) pbO-80TeO(2) (where x=0.1mol% to 0.5 mol%) were prepared by using conventional melt quenching method. The prepared glass samples were initially amorphous in nature after annealed at 400(0)c all samples were crystallized. This was confined by X-ray diffraction and scanning electron microscopy. The particle size of these glass ceramics have been calculated by using Debye-Scherer formula and the particle size is in the order of 15nm to 60nm. The scanning electron microscopy (SEM) photograph shows the presence of needle-like crystals in these samples.