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Microstructure and electrical properties of 0.94Bi0.51(Na1-x K x )0.50TiO3-0.06(Ba0.98Ca0.02)(Ti0.94Sn0.06)O3 ceramics

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Abstract

0.94Bi0.51(Na1-x K x )0.50TiO3-0.06(Ba0.98Ca0.02)(Ti0.94Sn0.06)O3 (abbr. as BNKxT-BCTS) ceramics with x = 0, 0.05, 0.10, 0.15, 0.20, 0.30, and 0.40 were prepared by the conventional solid-state method, and the effect of K content on their microstructure and electrical properties together with the temperature dependence of their piezoelectric properties was investigated. It was found that the morphotropic phase boundary of rhombohedral and tetragonal phases lies in the range of 0 ≤ x ≤ 0.10, the best electrical properties in this composition range being (d 33 ~ 201 pC/N and T d ~ 100 °C). The results indicate that an appropriate amount of K could further improve the piezoelectric properties and widen the application temperature range of these materials.

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Acknowledgments

Authors gratefully acknowledge the supports of the National Science Foundation of China (NSFC Nos. 50772068, 50972095, 51102173, 51272164, and 51332003), the Fundamental Research Funds for the Central Universities, and the introduction of talent start funds of Sichuan University (2082204144033). And Authors also thank Ms. Wang Hui for her help in the SEM measurement.

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Authors and Affiliations

  1. Department of Materials Science, Sichuan University, Chengdu, 610064, People’s Republic of China

    Bo Wu, Dingquan Xiao, Jiagang Wu & Jianguo Zhu

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  1. Bo Wu
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  2. Dingquan Xiao
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  3. Jiagang Wu
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  4. Jianguo Zhu
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Correspondence to Jiagang Wu or Jianguo Zhu.

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Wu, B., Xiao, D., Wu, J. et al. Microstructure and electrical properties of 0.94Bi0.51(Na1-x K x )0.50TiO3-0.06(Ba0.98Ca0.02)(Ti0.94Sn0.06)O3 ceramics. J Electroceram 37, 18–22 (2016). https://doi.org/10.1007/s10832-016-0034-1

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  • DOI: https://doi.org/10.1007/s10832-016-0034-1

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