Skip to main content
SpringerLink
Log in

BaTiO3-based positive temperature coefficient of resistivity ceramics with low resistivities prepared by the oxalate method

  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

Positive temperature coefficient of resistivity (PTCR) ceramics with low resistivities at room temperature were obtained by using oxalate-derived barium titanate powders. The average room-temperature resistivity of the PTCR ceramics was 4Ω cm, and the magnitude of their PTCR jump was around four orders with a voltage proof of more than 50 Vmm−1. These PTCR properties are significantly influenced by the calcination temperature of the starting materials and by the resultant properties of the ceramic bodies. The microstructure of such-PTCR ceramics with a low room-temperature resistivity produced in this study was found to be rather heterogeneous. Complex impedance measurements revealed that the resistivity of the present PTCR materials was determined predominantly by the grain-boundary resistance even at room temperature.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. P. W. HAAYMAN, R. W. DAM and H. A. KLASENS, German Pat. 929350, 23 June 1955.

  2. B. M. KULWICKI, in “Advances in Ceramics, Vol. 1, Grain Boundary Phenomena in Electronic Ceramics”, edited by L. M. LEVINSON (American Ceramic Society, Columbus, OH, 1981) p. 138.

    Google Scholar 

  3. H. NEMOTO and I. ODA, J. Am. Ceram. Soc. 63 (1980) 398.

    Article  CAS  Google Scholar 

  4. S. K. SUNDARAM, J. Phys. Ds 23 (1990) 103.

    Article  CAS  Google Scholar 

  5. O. SABURI, J. Phys. Soc. Jpn 14 (1959) 1159.

    Article  CAS  Google Scholar 

  6. M. KUWABARA, J. Am. Ceram. Soc. 64 (1981) 639.

    Article  CAS  Google Scholar 

  7. N. S. PANWAR and B. S. SEMWAL, Ferroelectrics 115 (1191) 1.

    Article  Google Scholar 

  8. T. Y. TSENG and S. H. WANG, Mater. Lett. 9 (1990) 164.

    Article  CAS  Google Scholar 

  9. W. S. CLABAUGH, E. M. SWIGGARD and R. GILCHRIST, J. Res. Nat. Bur. Stand. 56 (1956) 289.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Physics, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753, Yamaguchi, Japan

    K. Nozaki

  2. Department of Solid State Electronics, Osaka Electro-Communication University, 18-8 Hatsucho, Neyagawa, 572, Osaka, Japan

    M. Kawaguchi

  3. Ube Research Center, Central Glass Co., Ltd, 5253 Okiube, Ube, 755, Yamaguchi, Japan

    K. Sato

  4. Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata, Kitakyushu, 804, Fukuoka, Japan

    M. Kuwabara

Authors
  1. K. Nozaki
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. Kawaguchi
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. K. Sato
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. M. Kuwabara
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Nozaki, K., Kawaguchi, M., Sato, K. et al. BaTiO3-based positive temperature coefficient of resistivity ceramics with low resistivities prepared by the oxalate method. Journal of Materials Science 30, 3395–3400 (1995). https://doi.org/10.1007/BF00349885

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00349885

Keywords

Search

Navigation