The behavior of glasses with various Li2O contents was investigated at frequencies ranging from 10Hz to 2MHz, and temperature ranging from 373K to just below the glass transition. The compositional dependences of the direct-current conductivity (figure 7) and the activation energy were compared with those of glasses which used traditional network-formers but contained the same Li+ ions as modifiers. The frequency-dependent electrical data were analyzed within the framework of the conductivity and modulus formalisms. Both these provided for qualitative similarities in the compositional variation of relaxation times, interactions between cations, and direct-current conductivity.

Ionic Conductivity and Relaxation Dynamics in Lithium Tellurite Glasses. A.Pan, A.Ghosh: Physical Review B, 1999, 60[5], 3224-9

Figure 7

Direct-Current Conductivity of (1-x)TeO2-xLi2O

(a: x = 0.30, b: x = 0.25, c: x = 0.20, d: x = 0.15, e: x = 0.10)