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Lithium and potassium ion conduction in A3TiB′P3O12 (A=Li, K; B′=Zn, Cd) NASICON-type glasses

Authors :
Mariappan, C.R.
Govindaraj, G.
Roling, B.
Source :
Solid State Ionics. Feb2005, Vol. 176 Issue 7/8, p723-729. 7p.
Publication Year :
2005

Abstract

Abstract: Electrical properties of A3TiB′P3O12 (A=Li, K; B′=Zn, Cd) NASICON-type glasses are reported over a frequency range from 42 Hz to 1 MHz and at different temperatures. By means of nonlinear least square fitting of the electrical data to appropriate equivalent circuits, the bulk conductivity is separated from electrode effects. The bulk dc conductivity is Arrhenius activated, with activation energies and pre-exponential factors following the Meyer–Neldel rule. The frequency- and temperature-dependent conductivity spectra of individual glasses can be superimposed by means of the Summerfield scaling. However, the master curves of different glasses do not superimpose. We show that this effect is related to the composition dependence of the many-particle displacement function 〈R2(t)〉. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
01672738
Volume :
176
Issue :
7/8
Database :
Academic Search Index
Journal :
Solid State Ionics
Publication Type :
Academic Journal
Accession number :
16135579
Full Text :
https://doi.org/10.1016/j.ssi.2004.11.008