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Conductivity of alkali perchlorates at high temperatures

A. S. Ulihin ; N. F. Uvarov ; Bengt-Erik Mellander (Institutionen för teknisk fysik, Fasta tillståndets fysik)
SOLID STATE IONICS (0167-2738 ). Vol. 179 (2008), 1-6, p. 228-230.
[Artikel, refereegranskad vetenskaplig]

Ionic conductivity of high-temperature phases of alkaline metal perchlorates is studied. It is found that the conductivity passes through a minimum with increasing radius of cation, and KClO4 exhibits the lowest conductivity. This is explained by a decrease in the relative size of conduction channel, which hampers the cation transfer, and an increase in the relative free volume. The free-volume increase promotes the perchlorate anion reorientation and reduces the activation energy for ion transfer by the "paddle-wheel" mechanism, as a result, the conductivity increases. (c) 2007 Elsevier B.V. All rights reserved.

Nyckelord: ionic conductivity, perchlorates, reorientation of anions, paddle-wheel, mechanism



Denna post skapades 2009-10-27. Senast ändrad 2013-05-08.
CPL Pubid: 100850

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Fasta tillståndets fysik (2005-2015)

Ämnesområden

Den kondenserade materiens fysik
Teknisk fysik

Chalmers infrastruktur