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Title: Variable-range-hopping conductivity in high-k Ba(Fe0.5Nb 0.5)O3 ceramics
Authors: Ke, S
Lin, P
Fan, H
Huang, H 
Zeng, X
Issue Date: 2013
Source: Journal of applied physics, 2013, v. 114, no. 10, 104106, p. 104106-1-104106-7
Abstract: The dielectric and transport properties of Ba(Fe0.5Nb 0.5)O3 ceramics have been investigated in a temperature range of 140-300 K and a frequency range of 1 Hz-10 MHz. The temperature dependence of bulk dc conductivity does not feature an Arrhenius behavior, but indicates a variable-range-hopping mechanism. The observed low temperature relaxation can be perfectly described by a polaronic model, which indicates that the dielectric relaxation is intimately related to the hopping motion caused by localized charge carriers.
Publisher: American Institute of Physics
Journal: Journal of applied physics 
ISSN: 0021-8979
EISSN: 1089-7550
DOI: 10.1063/1.4821042
Rights: © 2013 AIP Publishing LLC.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in S. Ke et al., J. Appl. Phys. 114, 104106 (2013) and may be found at https://dx.doi.org/10.1063/1.4821042
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