Glasses of the form, MoO3-20BaF2-(30-x)AgI-xLiF (where x was 10, 15, 20 or 25mol%), were prepared. They were investigated by performing density, molar volume, differential thermal analysis, infra-red, electron paramagnetic resonance and direct-current electrical conductivity measurements. When the Li+ ion concentration was below 10mol%, LiF contributed directly to the network. This caused a decrease in the density, glass transition temperature, activation energy and electronic conduction, but improved the ionic conduction. At concentrations greater than 10mol%, increased numbers of Li+ and F- ions were weakly bound in interstitial positions among the basic constituent units, MoO6 and MoO4. An equation for calculating the jump distances of mobile Li+ and F- ions, as a function of the ionic radius and molar volume, was derived.

Ionic Conductivity in MoO3-BaF2-AgI-LiF Glasses. M.El-Hofy, I.Z.Hager: Physica Status Solidi A, 2000, 182[2], 697-707