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Electrical conductivity of reduced barium titanate crystals

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Abstract

The conductivity, Seebeck coefficient and Curie point have been measured in reduced crystals of barium titanate. The results have been interpreted in terms of a polaron hopping model, leading to an estimated mobility of 5×10−4 cm2 V−1 sec−1 at 300° K, and an activation energy of 0.074 eV. The Curie point falls as a result of reduction, probably due to the formation of oxygen vacancies. The decrease can be correlated with the changes in conductivity through the estimated carrier density.

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Author notes

  1. D. L. Ridpath

    Present address: CEGB, Sudbury House, London, E.C.1

Authors and Affiliations

  1. Department of Applied Physics and Electronics, Durham University, South Road, Durham City, UK

    D. L. Ridpath & D. A. Wright

Authors
  1. D. L. Ridpath
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  2. D. A. Wright
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Ridpath, D.L., Wright, D.A. Electrical conductivity of reduced barium titanate crystals. J Mater Sci 5, 487–491 (1970). https://doi.org/10.1007/BF00556035

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  • DOI: https://doi.org/10.1007/BF00556035

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