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Nature of ionic conductivity of lanthanide tungstates with imperfect scheelite structure

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Abstract

Electric properties of tungstates with imperfect scheelite structure, Ln2(WO4)3 (Ln = La, Sm, Eu), are studied; the charge carrier type is determined in these phases. It is found that the conductivity type of Ln2(WO4)3 is predominantly ionic, though there is a contribution of n-type electron conductivity component in the case of Eu2(WO4)3. The Tubandt method was used to establish a negligible contribution of the [WO4]2– anion into transport, which, together with the results of the EMF technique, points to the predominantly oxygen character of conductivity.

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Authors and Affiliations

  1. Ural Federal University Named after the First President of Russia B.N. Yel’tsin, Yekaterinburg, 620002, Russia

    N. N. Pestereva, I. A. Vyatkin, D. A. Lopatin & A. F. Guseva

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  1. N. N. Pestereva
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  2. I. A. Vyatkin
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  3. D. A. Lopatin
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  4. A. F. Guseva
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Correspondence to N. N. Pestereva.

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Dedicated to the memory of Prof. Arkadiy Ya. Neiman, founder of the ideas of this work

Original Russian Text © N.N. Pestereva, I.A. Vyatkin, D.A. Lopatin, A.F. Guseva, 2016, published in Elektrokhimiya, 2016, Vol. 52, No. 11, pp. 1213–1220.

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Pestereva, N.N., Vyatkin, I.A., Lopatin, D.A. et al. Nature of ionic conductivity of lanthanide tungstates with imperfect scheelite structure. Russ J Electrochem 52, 1082–1089 (2016). https://doi.org/10.1134/S1023193516110094

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  • DOI: https://doi.org/10.1134/S1023193516110094

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