Abstract
The effect of crystallization on the electrical conductivity of lithium metasilicate glass were studied. Conductivities were measured by a.c. complex impedance method. Lithium metasilicate glass devitrifies in two steps i.e. 1) crystallization of a first phase, Li 4SiO 4, with a composition different from the that of the initial glass and 2) at a higher temperature transformation of this phase into a second phase, Li 2SiO 3. After each crystallization step a decrease of the electrical conductivity and an increase of the conduction activation energy was observed.
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