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Electrical breakdown of the positive temperature coefficient of resistivity barium titanate ceramics

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Abstract

Positive temperature coefficient of resistivity barium titanate ceramic is a semiconductor at room temperature, so it is self-heated under certain applied voltage, and then changes into an insulator. The electrical breakdown has been investigated with the resistance-temperature characteristics of the three samples which have different compositions. The grain size effect on the breakdown voltage also is discussed. As the applied voltage increased, the electrical breakdown was initiated when the specimen interior was heated above the temperature corresponding to the maximum resistance on the resistance-temperature curves by joule heat.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejon, Korea

    Duk-Hee Kim & Ho-Gi Kim

  2. Material Analysis Laboratory, Test and Inspection Center, Korea Academy of Industrial Technology, Seoul, Korea

    Woo-Sik Um

Authors
  1. Duk-Hee Kim
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  2. Woo-Sik Um
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  3. Ho-Gi Kim
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Kim, DH., Um, WS. & Kim, HG. Electrical breakdown of the positive temperature coefficient of resistivity barium titanate ceramics. Journal of Materials Research 11, 2002–2008 (1996). https://doi.org/10.1557/JMR.1996.0252

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  • DOI: https://doi.org/10.1557/JMR.1996.0252

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