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Mixed Electronic-Ionic Conduction in Ru-Doped SrTiO3 at High Temperature

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Abstract

The electronic and ionic conduction behavior of Ru-doped SrTiO3 at high temperature was investigated. The conductivity increased significantly with increasing Ru content. SrTi0.80Ru0.20O3−δ exhibits fairly high conductivities, e.g., 3 S cm−1 at 1000°C, and 2 S cm−1 at 600°C. The conductivity had only a slight dependence on the partial pressure of oxygen over a wide range and was largely attributed to n-type electronic conduction. Ru-doped SrTiO3 showed mixed oxide-ionic and electronic conduction under reducing atmospheres. The mechanism of the electronic and ionic conduction is discussed.

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Authors and Affiliations

  1. Center for Integrated Research in Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan

    Hiroshige Matsumoto, Daisuke Murakami, Tetsuo Shimura, Shin-ichi Hashimoto & Hiroyasu Iwahara

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  1. Hiroshige Matsumoto
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  2. Daisuke Murakami
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  3. Tetsuo Shimura
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  4. Shin-ichi Hashimoto
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  5. Hiroyasu Iwahara
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Matsumoto, H., Murakami, D., Shimura, T. et al. Mixed Electronic-Ionic Conduction in Ru-Doped SrTiO3 at High Temperature. Journal of Electroceramics 7, 107–111 (2001). https://doi.org/10.1023/B:JECR.0000027950.07456.1d

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  • DOI: https://doi.org/10.1023/B:JECR.0000027950.07456.1d

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