Structure and other physical properties of magnesium vanadate glasses

Structure and other physical properties of (100-x)MgO-xV(2)O(5) glasses of different compositions are reported in this paper. Different studies like X-ray diffractograms and oxygen molar volume show that homogeneous glasses are obtained in the composition domain x = 60-90 mol%. It has been observed that the network structure for all glass compositions is built up of VO4 polyhedra. The glass transition temperatures are observed to decrease with an increase in V2O5 content in the compositions. An increase in the concentration of the reduced V4+ ions with an increase in V2O5 content is observed from the magnetic susceptibility studies. (C) 1999 Elsevier Science B.V. All rights reserved.