Electrical conductivity and conductivity relaxation in ZrF4-BaF2-YF3-LiF glasses

Sural, M. ; Ghosh, A. (1998) Electrical conductivity and conductivity relaxation in ZrF4-BaF2-YF3-LiF glasses Journal of Physics: Condensed Matter, 10 (47). pp. 10577-10586. ISSN 0953-8984

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Official URL: http://iopscience.iop.org/0953-8984/10/47/009

Related URL: http://dx.doi.org/10.1088/0953-8984/10/47/009


The electrical conductivity and the conductivity relaxation of the fluoride glasses in the system ZrF4-BaF2-YF3-LiF with LiF content ranging from 10 to 60 mol% have been investigated in the frequency range 10 Hz-2 MHz and in the temperature range from 300 K to just below the glass transition temperatures. The conductivity shows a minimum and the activation energy a maximum for 20 mol% LiF content, which is interpreted as a crossover from F-dominated conductivity to Li-dominated conductivity at 20 mol% LiF. The glass decoupling index also shows a minimum for 20 mol% LiF, which is associated with the occurrence of the minimum for the conductivity. The conductivity relaxation parameter β, however, shows a minimum for 30 mol% LiF. A structural origin has been proposed to account for this.

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Deposited On:13 Nov 2010 14:05
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