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Synthesis and electrical properties of (BaTiO3)1 −x (K0.5Bi0.5TiO3) x solid solutions

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Abstract

(BaTiO3)1 − x (K0.5Bi0.5TiO3) x solid solutions exhibiting positive temperature coefficient of resistance behavior have been prepared using BaTiO3 presynthesized through oxalate coprecipitation. The peak in their dielectric permittivity has been shown to shift to higher temperatures (above 120°C) with increasing x. We have examined the effect of K0.5Bi0.5TiO3 content on the microstructure of the (BaTiO3)1 − x (K0.5Bi0.5TiO3) x solid solutions. The results demonstrate that, with increasing x, both the minimum and maximum resistivities of the materials in the temperature range of their positive temperature coefficient of resistance behavior increase. The materials prepared using barium titanate presynthesized by the oxalate route have higher Curie temperatures and temperatures where they exhibit positive temperature coefficient of resistance behavior and lower minimum resistivities than do the materials prepared by solid-state reactions.

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Authors and Affiliations

  1. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, pr. Akademika Palladina 32/34, Kyiv, 03142, Ukraine

    T. A. Plutenko, O. I. V’yunov & A. G. Belous

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  1. T. A. Plutenko
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  2. O. I. V’yunov
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  3. A. G. Belous
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Correspondence to O. I. V’yunov.

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Original Russian Text © T.A. Plutenko, O.I. V’yunov, A.G. Belous, 2012, published in Neorganicheskie Materialy, 2012, Vol. 48, No. 12, pp. 1357–1364.

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Plutenko, T.A., V’yunov, O.I. & Belous, A.G. Synthesis and electrical properties of (BaTiO3)1 −x (K0.5Bi0.5TiO3) x solid solutions. Inorg Mater 48, 1183–1189 (2012). https://doi.org/10.1134/S0020168512120047

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  • DOI: https://doi.org/10.1134/S0020168512120047

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