Structural study of Li2O-V2O5 glasses by neutron and X-ray diffraction

Neutron and X-ray diffraction measurements were made for xLi(2)O (.) (100-x)V2O5 glasses (x = 0, 10, 20, 30 and 40) prepared by a single roller melt-spinning technique. By fitting the peaks in the radial distribution function, the coordination number of O atoms around V atoms, NV-O, is estimated to be 4.33. A change of NV-O by the addition of Li2O is not observed in the Li2O-V2O5 glasses. It is confirmed that the network structure is made of corner-shared polyhedral units. It is also suggested that non-bridging oxygens increase by the addition of Li2O. (C) 2002 Published by Elsevier Science B.V.