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Cu segregation and its effects on the electrical properties of calcium copper titanate

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Abstract

By sintering CaCu3Ti4O12 ceramics at different temperatures and testing the samples’ properties, the segregation behavior of Cu and its effects were carefully studied. As the temperature rises, CuO segregates to the grain boundaries and gradually volatilize. Complete decomposition and volatilization occur at 1150°C. The behavior of CuO is found to be closely related to the formation of the grain boundary barrier, as well as the acquirement and evolution of the electrical properties, which are revealed in the research.

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Authors and Affiliations

  1. State Key Laboratory of Power Systems, and Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China

    JinLiang He, FengChao Luo & Jun Hu

  2. State Key Laboratory of New Ceramics and Fine Processing, and Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

    YuanHua Lin

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  1. JinLiang He
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  2. FengChao Luo
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  3. Jun Hu
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  4. YuanHua Lin
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Correspondence to JinLiang He.

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He, J., Luo, F., Hu, J. et al. Cu segregation and its effects on the electrical properties of calcium copper titanate. Sci. China Technol. Sci. 54, 2506–2510 (2011). https://doi.org/10.1007/s11431-011-4418-9

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  • DOI: https://doi.org/10.1007/s11431-011-4418-9

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