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DC and AC Electrical Properties of Sr2-xLixFeMnO6 Compound
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DC and AC Electrical Properties of Sr2-xLixFeMnO6 Compound

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Abstract:

The variations of dc conductivities (σ) of the Sr2-xLixFeMnO6 double perovskite system over a range of temperatures (100 ~ 300 K) and for several concentrations (0≤ x ≤ 0.4) of incorporated Li+ ions are well described by the equation σ = (B/T) exp(−Ea/kT) and show a decrease with decreasing temperature for a given doping. At a given temperature, σ tends to decrease with increasing x. The derived activation energy shows a gradual increase with x with a range of values that are lower than what is usually reported. The measured ac impedance is used to extract the relaxation frequencies as a function of composition and temperature.

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Key Engineering Materials (Volumes 368-372)

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150-153

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https://doi.org/10.4028/www.scientific.net/KEM.368-372.150

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February 2008

Authors:

A. Sellai, H. Widatallah, O.A. Yassin, M. Elzain

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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