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Structure and electrical properties in Sb-doped Ba0.93Ca0.07Ti0.92Sn0.08O3 ceramics near the phase coexistence point

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Abstract

In this work, Sb-doped Ba0.93Ca0.07Ti0.92Sn0.08O3 ceramics were successfully prepared by conventional solid-phase sintering reaction process and their phase structure, microstructure, and electrical properties were investigated systematically. The enhanced piezoelectric and dielectric properties (d33 = 520 pC/N, kp = 0.475, Qm = 149.3, εr = 6113 and tanδ = 1.73%) were obtained due to the co-existence of rhombohedral, orthorhombic and tetragonal phases near the room temperature. Meanwhile, the optimal ferroelectric properties (Pr = 8.17 μC/cm2, Ec = 1.56 kV/cm) were also gained at x = 0.15 mol%. The temperature dependence of dielectric constant reveals relaxation behavior at various frequencies, and relevant diffuse phase transition has been carefully studied. The large d33, εr, low tanδ and the relaxation behavior in (1−x)Ba0.93Ca0.07Ti0.92Sn0.08O3–xSb2O3 (x = 0.15 mol%) ceramic make it as a potential candidate for high power piezoelectric applications and ceramic capacitors.

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Acknowledgements

The work was supported by High-Level Innovative Talents Plan of Guizhou Province No.(2015)4009 and Specialized Funds from Industry and Information Technology Department of Guizhou Province No. 2016056. And the authors also acknowledged the support of the National Natural Science Foundation of China under Project No. 51602066.

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Authors and Affiliations

  1. College of Material and Metallurgy, Guizhou University, Guiyang, 550025, Guizhou, People’s Republic of China

    Shiqiang Peng, Yuanyu Wang, Qibin Liu, An Xue, Enpei Cai & Fanghui Mou

  2. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, People’s Republic of China

    Fangfang Zeng

  3. Key Laboratory for Material Structure and Strength of Guizhou Province, Guiyang, 550025, Guizhou, People’s Republic of China

    Qibin Liu

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  1. Shiqiang Peng
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Correspondence to Qibin Liu.

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Peng, S., Zeng, F., Wang, Y. et al. Structure and electrical properties in Sb-doped Ba0.93Ca0.07Ti0.92Sn0.08O3 ceramics near the phase coexistence point. J Mater Sci: Mater Electron 31, 16235–16246 (2020). https://doi.org/10.1007/s10854-020-04166-0

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