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Electrical conductivity of LaCo x Fe1 − x O3 − δ and LaLi0.1Co x Fe0.9 − x O3 − δ (0 ≤ x ≤ 0.4) oxides

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Abstract

We have studied the effect of Co and Li concentrations on the phase composition and electrical conductivity of LaCo x Fe1 − x O3 − δ and LaLi0.1Co x Fe0.9 − x O3 − δ perovskite-like oxides synthesized in air at 1470 K. Single-phase materials with an orthorhombic crystal structure were obtained in the range 0 ≤ x ≤ 0.3. The composition dependences of conductivity have a minimum at x c = 0.1 and 0.2, respectively. In the range x > 0.1, the conductivity of LaCo x Fe1 − x O3 − δ increases with increasing Co concentration for T > 700 K and decreases for T < 600 K. The conductivity of La(Li0.1Co x Fe0.9 − x )O3 − δ in the range 0 ≤ x ≤ 0.1 and for x ≥ 0.2 increases with Co concentration throughout the temperature range studied.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 20, Yekaterinburg, 620219, Russia

    S. I. Vecherskii, S. N. Tabatchikova, B. D. Antonov & V. A. Biryukov

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  1. S. I. Vecherskii
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  2. S. N. Tabatchikova
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  3. B. D. Antonov
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  4. V. A. Biryukov
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Correspondence to S. I. Vecherskii.

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Original Russian Text © S.I. Vecherskii, S.N. Tabatchikova, B.D. Antonov, V.A. Biryukov, 2011, published in Neorganicheskie Materialy, 2011, Vol. 47, No. 12, pp. 1486–1490.

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Vecherskii, S.I., Tabatchikova, S.N., Antonov, B.D. et al. Electrical conductivity of LaCo x Fe1 − x O3 − δ and LaLi0.1Co x Fe0.9 − x O3 − δ (0 ≤ x ≤ 0.4) oxides. Inorg Mater 47, 1356–1360 (2011). https://doi.org/10.1134/S0020168511120211

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  • DOI: https://doi.org/10.1134/S0020168511120211

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