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Enhanced dielectric relaxation behavior of Zr doped Ba0.9Ca0.1Zr x Ti1−x O3–0.03Bi3+ ceramics

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Abstract

The enhancement of dielectric relaxation behavior of lead-free Zr4+ doped Ba0.9Ca0.1Zr x Ti1−x O3–0.03Bi3+ ceramics prepared by hydrothermal method were studied. The XRD patterns and calculated lattice parameters both indicated a phase transition from tetragonal to cubic phase with x increasing from 0.00 to 0.12. And the increasing Zr exhibits the homogenization of grain size from SEM patterns. Compositions of x = 0.00 and 0.03 were normal ferroelectrics with sharp T m peak while the samples exhibit strong relaxation behavior at x = 0.09 and 0.12 and the relaxation parameters were calculated. Thus the lead-free Ba1−x Ca x Ti1−x Zr x O3 system relaxor ferroelectrics were obtained. The P–E loops of all these samples can be divided into two types: the broad and the narrow, which was probably attributed to the grain size and phase transition at room temperature.

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Acknowledgments

This research was supported by the National Natural Science Foundation of China (51372144 and 51102159), the New Century Excellent Talents Program of Chinese Education Ministry (NCET-11-1042), the International Science and Technology Cooperation Project Funding of Shaanxi Province (2012KW-06), and Graduate Innovation Fund of Shaanxi University of Science and Technology.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an, 710021, People’s Republic of China

    Zixiong Sun & Yongping Pu

  2. School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300310, People’s Republic of China

    Chenfei Zhang

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  1. Zixiong Sun
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  2. Yongping Pu
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Correspondence to Zixiong Sun.

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Sun, Z., Pu, Y. & Zhang, C. Enhanced dielectric relaxation behavior of Zr doped Ba0.9Ca0.1Zr x Ti1−x O3–0.03Bi3+ ceramics. J Mater Sci: Mater Electron 26, 1275–1281 (2015). https://doi.org/10.1007/s10854-014-2537-3

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  • DOI: https://doi.org/10.1007/s10854-014-2537-3

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