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Sintering behavior and reliability characteristics of BaTiO3-based ceramics prepared by different methods

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Abstract

Fine-grained BaTiO3-based ceramics with core–shell structures were prepared using the chemical coating method and the solid-state method. The sintering behavior and microstructure evolution were investigated for the samples prepared using different methods. The dielectric properties of modified BaTiO3 ceramics were also investigated, and the TEM–EDS results provided a detailed explanation for the different temperature coefficient of capacitance behaviors. In addition, the insulation resistivity for the ceramic samples under elevated temperature and high voltages was observed. The highly accelerated lifetime test results indicate that the samples prepared by the chemical coating method exhibited higher insulation resistance and a smaller degradation rate. Impedance analysis demonstrated that the grain boundary activation energy was much higher for the samples prepared by the chemical coating method.

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Acknowledgements

This work was supported by the Ministry of Sciences and Technology of China through the National Basic Research Programme of China (973 Programme 2009CB623301), the National Natural Science Foundation of China for Creative Research Groups (Grant No.51221291), the National Natural Science Foundation of China for distinguished young scholars (Grant No. 50625204), the National Natural Science Foundation of China (Grant No. 51272123), and Samsung Electro-Mechanics Co., Ltd.

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  1. State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

    Huiling Gong, Xiaohui Wang, Shaopeng Zhang & Longtu Li

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  1. Huiling Gong
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  2. Xiaohui Wang
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  3. Shaopeng Zhang
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  4. Longtu Li
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Correspondence to Xiaohui Wang or Longtu Li.

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Gong, H., Wang, X., Zhang, S. et al. Sintering behavior and reliability characteristics of BaTiO3-based ceramics prepared by different methods. J Mater Sci 50, 3523–3530 (2015). https://doi.org/10.1007/s10853-015-8896-1

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  • DOI: https://doi.org/10.1007/s10853-015-8896-1

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