Glasses with molar compositions of the form, (60-x)B2O3-40Li2O-xTiO2, were annealed. The results of direct-current and alternating-current measurements showed that the conduction was mainly ionic, in spite of the introduction of Ti ions which led to compaction of the borate lattice. It was suggested that the Ti ions were introduced as Ti4+ network formers. The Li ions were alone responsible for the conduction process, and for a change in the glass network structure. It was found that the conductivity of the samples was not affected by heat treatments. A power-law analysis of the frequency dependence of the alternating-current conductivity of the glasses showed that the exponent did not depend upon the temperature.

K.El-Egili, I.A.Gohar: Physics and Chemistry of Glasses, 1996, 37[4], 171-5