Variable-range-hopping conductivity in high-k Ba(Fe0.5Nb 0.5)O3 ceramics

Shanming Ke, Peng Lin, Huiqing Fan, Haitao Huang, Xierong Zeng

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33 引用 (Scopus)

摘要

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.

源语言英语
文章编号104106
期刊Journal of Applied Physics
114
10
DOI
出版状态已出版 - 14 9月 2013

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