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Influence of Bi3+ ions in enhancing the magnitude of positive temperature coefficients of resistance in n-BaTiO3 ceramics

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Abstract

Bi3+ ions substituting at Ba-sites in a limited concentration range with another donor dopant occupying the Ti-sites in polycrystalline BaTiO3 enhanced the positive temperature coefficient of resistance (PTCR) by over seven orders of magnitude. These ceramics did not require normal post sinter annealing or a change to an oxygen atmosphere during annealing. These ceramics had low porosities coupled with better stabilities to large applied electric fields and chemically reducing atmospheres. Bi3+ ions limited the grain growth to less than 8 Μm in size, they enhanced the concentration of acceptor-type trap centres at the grain-boundary-layer regions and maintained complete tetragonality at low grain sizes in BaTiO3 ceramics.

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References

  1. W. HEYWANG, J. Mater. Sci. 6 (1971) 1214.

    Google Scholar 

  2. O. SABURI and K. Waking, IEEE Trans. Comp. Parts 10 (1963) 53.

    Google Scholar 

  3. H. UEOKA and M. YODOGAWA, IEEE Trans. Manuf. Technol. 3 (1974) 77.

    Google Scholar 

  4. H. UEOKA, Ferroelectrics 7 (1974) 351.

    Google Scholar 

  5. M. KUWABARA, “Advances in ceramics”, edited by H. Y. Yan and D. C. Hill, Vol. 7 (1984) pp. 137–45.

  6. T. ASHIDA and H. TOYODA, Jpn. J. Appl. Phys. 5 (1966) 269.

    Google Scholar 

  7. G. H. JONKER, Mater. Res. Bull. 2 (1967) 401.

    Google Scholar 

  8. B. S. RAWAL, M. KAHN and W. R. BUESSEM, “Advances in ceramics” edited by L. M. Levinson and D. C. Hill, Vol. 1 (1981) pp. 172–88.

  9. P. MURUGARAJ and T. R. N. KUTTY, Mater. Res. Bull. 20 (1985) 1473.

    Google Scholar 

  10. S. V. BOGDANOV, K. V. KISELEVA and V. A. RASSUSHIN, Sov. Phys. Cryst. 10 (1965) 58

    Google Scholar 

  11. P. MURUGARAJ, T. R. N. KUTTY and M. SUBBARAO, J. Mater. Sci. 21 (1986) 3521.

    Google Scholar 

  12. P. MURUGARAJ and T. R. N. KUTTY, J. Mater. Sci. Lett. 5 (1986) 171.

    Google Scholar 

  13. T. R. N. KUTTY, P. MURUGARAJ and N. S. GAJBHIYE, Mater. Lett. 2 (1984) 396.

    Google Scholar 

  14. Idem. T. R. N. KUTTY, P. MURUGARAJ and N. S. GAJBHIYE, Mater. Res. Bull. 20 (1985) 565.

    Google Scholar 

  15. Idem. T. R. N. KUTTY, P. MURUGARAJ and N. S. GAJBHIYE, Mater. Lett. 3 (1985) 195.

    Google Scholar 

  16. T. R. N. KUTTY and P. MURUGARAJ, J. Mater Sci. 22 (1987) 3652.

    Google Scholar 

  17. A. F. Wells, Structural inorganic chemistry, 4th Edn (Oxford University Press, Oxford, 1975) p. 712.

    Google Scholar 

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Authors and Affiliations

  1. Materials Research Centre, Indian Institute of Science, 560012, Bangalore, India

    P. Padmini & T. R. N. Kutty

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  1. P. Padmini
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  2. T. R. N. Kutty
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Padmini, P., Kutty, T.R.N. Influence of Bi3+ ions in enhancing the magnitude of positive temperature coefficients of resistance in n-BaTiO3 ceramics. J Mater Sci: Mater Electron 5, 203–209 (1994). https://doi.org/10.1007/BF00186186

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