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A model for the fast ionic diffusion in alumina-doped LiI

Stoneham, AM; Wade, E; Kilner, JA; (1979) A model for the fast ionic diffusion in alumina-doped LiI. Materials Research Bulletin , 14 (5) 661 - 666. 10.1016/0025-5408(79)90049-7. Green open access

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Abstract

Lithium Iodide shows enhanced ionic conductivity when doped with a powder of the insulator, alumina. We extend Landauer's effective medium model to see if the observations are consistent with a high conductivity layer forming on each non-conducting particle. The predictions are consistent with experiment provided one assumes the layer a few hundred Angstroms thick. At the outside, away from the particle, the enhancement of conductivity should fall off slowly, as in Debye-Huckel screening, whereas it is possible a new phase forms close to the insulator surface.

Type: Article
Title: A model for the fast ionic diffusion in alumina-doped LiI
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/0025-5408(79)90049-7
Publisher version: http://dx.doi.org/10.1016/0025-5408(79)90049-7
Language: English
Additional information: Text made available to UCL Discovery by kind permission of Elsevier B.V., 2012
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/80883
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