Ionic Conductivity In Glasses (In French)

Ionic conductivity and diffusion in glasses proceed by the same mechanisms and are very sensitive to temperature and glass composition. Depending upon the expected application, their characteristics may be empirically adjusted over ten orders in magnitude. Since glasses are at the boundary of the liquid and solid states, conceptually different but complementary approaches can be developed. The concept of defects formation and migration developed for ionic crystals explain the quantitatively the temperature dependence and the thermodynamic of weak electrolytic solutions allows to understand the high sensibility of ionic transport with the glass composition.