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Formation, densification, and electrical conductivity of air-sinterable (Sm1 − x Ca x )CrO3 prepared through citric acid route

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Abstract

In Ca2+-substituted SmCrO3, single-phase perovskite (Sm1 − x Ca x )CrO3, where x = 0 to 0.27, have been formed at low temperatures by a citric acid processing. (Sm1 − x Ca x )CrO3 powders consisting of submicrometer-size particles are sinterable; dense materials can be fabricated by sintering for 2 h at 1700°C under atmospheric pressure. The relative densities, grain sizes, and electrical conductivities increase with increased Ca2+ content. (Sm0.73Ca0.27)CrO3 materials show an excellent electrical conductivity of 2.6 × 103 S · m−1 at 1000°C.

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Authors and Affiliations

  1. Department of Molecular Science and Technology, Faculty of Engineering, Doshisha University, Kyo-Tanabe Kyoto, 610-0321, Japan

    K. Hirota, H. Hatta, M. Io, M. Yoshinaka & O. Yamaguchi

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  1. K. Hirota
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  2. H. Hatta
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  3. M. Io
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  4. M. Yoshinaka
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  5. O. Yamaguchi
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Hirota, K., Hatta, H., Io, M. et al. Formation, densification, and electrical conductivity of air-sinterable (Sm1 − x Ca x )CrO3 prepared through citric acid route. Journal of Materials Science 38, 3431–3435 (2003). https://doi.org/10.1023/A:1025144716714

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