Structural study of LiPO3TeO2 glasses

Abstract Short range order of three samples in the mixed glass former system, LiPO 3 TeO 2 , are investigated by X-ray diffraction and FT-Raman spectroscopy. The questions addressed in this study concern the effect of the mixed former on the structure in the presence of a modifier. PO and TeO distances are in the range reported for other phosphate and tellurite glasses. TeTe interaction is the major deformation exhibited by TeO 4 polyhedra in their chains. Mixed glass formation in Li 2 OP 2 O 5 TeO 2 system creates greater stability with higher T g when compared to binary glasses Li 2 OP 2 O 5 and Li 2 OTeO 2 . Higher T g owes its origin to the increased bridging between the PO 4 and TeO 4 chains.