The conductivity of ZnF2–AlF3–PbF2–LiF glasses was studied at 10Hz to 2MHz, and from 300K to just below the glass transition temperature. The conductivity decreased, with increasing LiF content, due to trapping of the F− ions by Li+ ions. Small values of the stretching exponent were found for these glasses. The value of the decoupling index decreased with increasing in LiF content; consistent with the compositional dependence of the conductivity.

Electrical Conductivity and Relaxation in ZnF2–AlF3–PbF2–LiF Glasses. M.Sural, A.Ghosh: Solid State Ionics, 2000, 130[3-4], 259-66