Mixed mobile ion effect in fluorozincate glasses

Ghosh, S. ; Ghosh, A. (2005) Mixed mobile ion effect in fluorozincate glasses Journal of Physics: Condensed Matter, 17 (23). pp. 3463-3472. ISSN 0953-8984

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Official URL: http://iopscience.iop.org/0953-8984/17/23/001

Related URL: http://dx.doi.org/10.1088/0953-8984/17/23/001


The mixed mobile ion effect has been investigated for the first time in zinc fluoride glasses where in addition to alkali cations fluorine anions also participate in the diffusion process, unlike mixed alkali oxide glasses. The minimum in the conductivity, conductivity relaxation frequency, crossover frequency and decoupling index indicates the existence of the mixed mobile ion effect in these fluoride glasses. It has been observed that the non-exponential parameter and the frequency exponent are independent of temperature. It has been established that alkali ions and fluorine anions exhibit lower dimensionality of the conduction pathways in mixed alkali zinc fluoride glasses than that in the single alkali lithium based zinc fluoride glasses while they are migrating. From the scaling of the conductivity spectra, it has been established that the relaxation dynamics in mixed alkali zinc fluoride glasses is independent of temperature and composition.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics Publishing.
ID Code:11640
Deposited On:13 Nov 2010 14:07
Last Modified:02 Jun 2011 05:03

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