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Electrical conduction properties of Sr-doped Bi4(SiO4)3 with the eulytite-type structure

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Abstract

Electrical conduction in 1 mol% Sr-doped Bi4(SiO4)3 with the eulytite-type structure at elevated temperatures was investigated with conductivity measurements. Conductivity of the material under wet condition was higher than that under dry condition, and were 1.2  ×  10−6 – 9.7  ×  10−5 S cm−1 at 500–850 °C. From H/D isotope effects and p(O2)-dependencies of the conductivity, it was found that the Sr-doped Bi4(SiO4)3 exhibited protonic conduction at all the temperatures investigated while contribution of p-type conduction became significant with increasing p(O2) and/or temperature. Protonic and p-type conductions in the material were discussed in terms of defect equilibria.

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Acknowledgements

A part of this work was supported by Industrial Technology Research Grant Program in ’05 from New Energy and Industrial Technology Development Organization (NEDO) of Japan. The authors acknowledge Dr. H. Miyamoto at New Eco Material Co. Ltd., Kochi, Japan, and Mr. Y. Nishikawa at the Technology Research Institute of Osaka Prefecture, Japan, for their help on material preparation.

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Authors and Affiliations

  1. Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan

    Naoto Kitamura, Koji Amezawa & Yoshiharu Uchimoto

  2. Graduate School of Energy Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan

    Yoichi Tomii

  3. Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan

    Teiichi Hanada

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  1. Naoto Kitamura
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  2. Koji Amezawa
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  3. Yoshiharu Uchimoto
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  4. Yoichi Tomii
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  5. Teiichi Hanada
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Correspondence to Naoto Kitamura.

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Kitamura, N., Amezawa, K., Uchimoto, Y. et al. Electrical conduction properties of Sr-doped Bi4(SiO4)3 with the eulytite-type structure. J Mater Sci 42, 6566–6571 (2007). https://doi.org/10.1007/s10853-007-1518-9

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  • DOI: https://doi.org/10.1007/s10853-007-1518-9

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