DC and AC Electrical Properties of Sr2-xLixFeMnO6 Compound

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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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Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

150-153

Citation:

A. Sellai et al., "DC and AC Electrical Properties of Sr2-xLixFeMnO6 Compound", Key Engineering Materials, Vols. 368-372, pp. 150-153, 2008

Online since:

February 2008

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$38.00

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