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Dielectric properties of spark-plasma-sintered BaTiO3

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Abstract

Spark-plasma-sintering (SPS) has been applied to BaTiO3 to prepare dense ceramics consisting of submicrometre-sized powder. Relatively dense (typically 97% of the theoretical X-ray density) pellets with an average grain size remaining similar to that of the starting powder, approximately 0.6 μm, were obtained by the SPS process. Fixed frequency (1 kHz) measurements show the room temperature permittivity of SPS ceramics to be relatively high, approximately 3500, and at least double the value of conventionally sintered ceramics, approximately 1500. Alternating current (a.c.) impedance spectroscopy measurements show that SPS is an effective process to reduce the influence of intergranular (grain boundary) effects on the permittivity and direct current (d.c.) resistance characteristics of BaTiO3 ceramics substantially.

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Authors and Affiliations

  1. Osaka National Research Institute,, AIST, Midorigaoka, 1-8-31,Ikeda,, Osaka,, 563-8577, Japan

    Tomonari Takeuchi, E. Bétourné, Mitsuharu Tabuchi & Hiroyuki Kageyama

  2. Central Research Institute of Electric Power Industry,, 11-1,2-chome, Iwado-Kita, Komae,, Tokyo,, 201-8511, Japan

    Yo Kobayashi & A. Coats

  3. Department of Chemistry,, University of Aberdeen, Meston Walk,, Aberdeen,, AB24 3UE,, UK

    F. Morrison, D. C. Sinclair & A. R. West

Authors
  1. Tomonari Takeuchi
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  2. E. Bétourné
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  3. Mitsuharu Tabuchi
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  4. Hiroyuki Kageyama
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  5. Yo Kobayashi
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  6. A. Coats
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  7. F. Morrison
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  8. D. C. Sinclair
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  9. A. R. West
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Correspondence to Tomonari Takeuchi.

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Takeuchi, T., Bétourné, E., Tabuchi, M. et al. Dielectric properties of spark-plasma-sintered BaTiO3. Journal of Materials Science 34, 917–924 (1999). https://doi.org/10.1023/A:1004506905278

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