Relaxation dynamics of charge carriers in fluoroaluminozincate glasses

Ghosh, A. ; Sural, M. (2001) Relaxation dynamics of charge carriers in fluoroaluminozincate glasses Physical Review B, 64 (14). 144203_1-144203_5. ISSN 0163-1829

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We have reported relaxation dynamics of charge carriers in fluoride glasses in the system ZnF2-AlF3-PbF2-LiF for different compositions in the frequency range 10 Hz-2 MHz and in the temperature range 300-550 K. We have analyzed the experimental data in the framework of the Almond-West formula and estimated the charge carrier concentration, hopping frequency, and the frequency exponent. We have observed that both the hopping frequency and the dc conductivity exhibit a minimum as a function of LiF content and the conductivity is primarily determined by the mobility rather than the concentration of charge carriers. We have also observed that the frequency exponent is independent of temperature but depends slightly on composition.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:11773
Deposited On:13 Nov 2010 13:55
Last Modified:02 Jun 2011 05:09

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