High-temperature electrical conductivity of the xNBT-(1-x)LMT ceramics: verification of Meyer-Neldel rule
authors Rudys, S; Ivanov, M; Grigalaitis, R; Glemza, K; Banys, J; Rubanik, VV; Shilin, AD; Salak, AN
nationality International
journal INTEGRATED FERROELECTRICS
author keywords Electrical conductivity; dielectric spectroscopy; activation energy; Meyer-Neldel rule
abstract Electrical conductivity behaviour of x(Na0.5Bi0.5)TiO3-(1-x)La(Mg0.5Ti0.5)O-3 ceramics with x ranging from 0.95 to 0.8 was analysed in the temperature range from 300 K to 800 K at microwaves (1 MHz - 1GHz frequency region). Analysis of calculated DC conductivity parameters has shown that the activation energy changes at about 690 K which could be associated with the phase change in these materials. The logarithm of preexponential factor of DC conductivity changes linearly according to the activation energy, i.e. it follows Meyer-Neldel rule both below and above the phase transition point.
publisher TAYLOR & FRANCIS LTD
issn 1058-4587
year published 2019
volume 196
issue 1
beginning page 47
ending page 51
digital object identifier (doi) 10.1080/10584587.2019.1591986
web of science category Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter
subject category Engineering; Physics
unique article identifier WOS:000472079700009
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journal impact factor 0.367
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