Rao, K. J. ; Estournes, C. ; Levasseur, A. ; Shastry, M. C. R. ; Menetrier, M. (1993) Activation barriers for D.C. conductivity in ionic glasses: classical calculations using the small-cluster approximation Philosophical Magazine Part B, 67 (3). pp. 389-406. ISSN 0958-6644
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Official URL: http://www.tandfonline.com/doi/abs/10.1080/1364281...
Related URL: http://dx.doi.org/10.1080/13642819308220140
Abstract
A small-cluster approximation has been used to calculate the activation barriers for the d.c. conductivity in ionic glasses. The main emphasis of this approach is on the importance of the hitherto ignored polarization energy contribution to the total activation energy. For the first time it has been demonstrated that the d.c. conductivity activation energy can be calculated by considering ionic migration to a neighbouring vacancy in a smali cluster of ions consisting of face-sharing anion polyhedra. The activation energies from the model calculations have been compared with the experimental values in the case of highly modified lithium thioborate glasses.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Taylor and Francis Ltd. |
| ID Code: | 91110 |
| Deposited On: | 17 May 2012 04:19 |
| Last Modified: | 17 May 2012 04:19 |
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