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Structure and enhanced dielectric temperature stability of Ba[(Zr0.2Ti0.8)1−xCex]O3 ceramics prepared by liquid phase coating method

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Abstract

The Ba[(Zr0.2Ti0.8)1−xCex]O3 ceramics were fabricated by liquid phase coating method and the impacts of cerium addition into the barium zirconate titanate matrix on their microstructure and dielectric properties were investigated. According to the XRD analysis, the Ba[(Zr0.2Ti0.8)1−xCex]O3 ceramics retain a cubic perovskite structure without secondary phases. The SEM images indicate that the average grain size and gain size distribution of Ba[(Zr0.2Ti0.8)1−xCex]O3 ceramics can be adjusted by the cerium content. And the minimum average grain size of 4.38 μm is obtained in Ba[(Zr0.2Ti0.8)0.92Ce0.08]O3 ceramic. Local deformation of the perovskite unit cells induced by the substitution of Ce3+ and Ce4+ for B-site host ions results in the reduction of the dielectric maximum temperature Tm as x increases. The room temperature dielectric constant and maximum dielectric constant decrease initially and then increase with the increase of x. The frequency dispersion of dielectric constant and the diffuseness of phase transition are found in the Ba(Zr0.2Ti0.8)O3 matrix after cerium doping. And the temperature stability of permittivity is optimized dramatically by moderate cerium addition in Ba[(Zr0.2Ti0.8)1−xCex]O3 ceramics, making these dielectrics promising for multilayer ceramic capacitor applications.

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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Funding

This work is supported by the Enterprise-University-Research Institute Cooperation Foundation of Jiangsu Province of China (No. BY2022965).

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Author notes

  1. Zezhong Wu and Yang Cao contributed equally.

Authors and Affiliations

  1. Department of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212100, People’s Republic of China

    Zezhong Wu, Yang Cao, Chen Zhang, Chun Wang, Xing Zhang & Xiaohan Liao

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  1. Zezhong Wu
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  2. Yang Cao
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  3. Chen Zhang
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  4. Chun Wang
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  5. Xing Zhang
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  6. Xiaohan Liao
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Contributions

All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by ZW, YC and CW. The first draft of the manuscript was written by CZ and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Chen Zhang.

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Wu, Z., Cao, Y., Zhang, C. et al. Structure and enhanced dielectric temperature stability of Ba[(Zr0.2Ti0.8)1−xCex]O3 ceramics prepared by liquid phase coating method. J Mater Sci: Mater Electron 34, 1437 (2023). https://doi.org/10.1007/s10854-023-10879-9

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  • DOI: https://doi.org/10.1007/s10854-023-10879-9

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