Abstract
We report the conductivity relaxation of some fast ion-conducting AgI–Ag 2O–V 2O 5 glasses in the frequency range from 10 Hz to 2 MHz and in the temperature range from 93 to 323 K. Using modulus formalism, we have shown that the conductivity relaxation is highly non-exponential. We have observed that the conductivity relaxation mechanism in these glasses is independent of temperature but dependent on the composition. We have further shown that the motion of Ag + ions is decoupled more and more from the viscous motion of the glassy matrix with the increase of AgI content in the composition, giving rise to the increase of the conductivity.
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