Effect of Co-Doping on the Electrical Properties of Magnesium and Copper-Containing Bismuth Niobate with Pyrochlor-Type Structure

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Resumo

Ruthenium-codoped bismuth niobate Bi1.5Cu0.375Mg0.375Nb1.45Ru0.05O7-δ with the pyrochlore structure was obtained by Pechini method. The distribution of Ru4+ over Nb5+ sites was established by structural analysis. According to the data of optical reflectance spectra, the optical band gap decreases from 2.40 to 2.27 eV for the sample doped with ruthenium. A small amount of ruthenium in the system was found to result in an increase in conductivity by 0.5 orders of magnitude compared to Cu-Mg-substituted bismuth niobate, due to an increase in the electronic component of the conductivity.

Sobre autores

I. Piir

Institute of Chemistry, Federal Research Center “Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences”

Email: ipiir@mail.ru

M. Koroleva

Institute of Chemistry, Federal Research Center “Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences”

V. Maksimov

Institute of Chemistry, Federal Research Center “Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences”;Pitirim Sorokin Syktyvkar State University

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