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Electrochemical synthesis and dielectric performance of Sr-doped BaTiO3 nano-powders

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Abstract

In this paper, Sr-doped BaTiO3 nanoparticles were synthesized via electrochemical method, leading to the successful preparation of Ba0.67Sr0.33TiO3 (BST) powders. The phase composition and microstructure of the powders were characterized using X-ray diffraction small angle X-ray scattering, scanning electron microscopy (SEM), and transmission electron microscopy. The results show that the average grain size of the nanoparticles is in the range of 10–20 nm, and the particles with good crystallinity are obtained under the environment of 3 mol.L−1 NaOH concentration. Sintering at 1250 ℃ for 3 h yields nanoscale BST ceramics with a dense structure and an average grain size of about 300 nm. These fine-grained ceramic samples exhibit superior temperature stability compared to relatively coarser BST ceramics. Furthermore, due to their nanoscale grain size, extensive phase transitions result in a low dielectric constant as observed from the dielectric property data. This work presents a novel approach for preparing nanoscale powders and homogeneous ceramics applicable in various electronic applications.

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Funding

The authors acknowledgements the financial support from the 2019 Project of Liaoning Education Department (Grant No. 2019FWDF01).

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Authors and Affiliations

  1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, China

    Shuai Yan, Sen Wang & Gaobin Liu

  2. Fujian Huaqing Electronic Material Technology Co., LTD, Quanzhou, 362263, China

    Wencai Hu, Sen Wang & Gaobin Liu

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  1. Shuai Yan
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Contributions

Writing—original draft preparation: [Shuai Yan]; Writing—review and editing: [Sen Wang]; Conceptualization: [Wencai Hu]; Writing—review and editing: [Gaobin Liu].

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Correspondence to Sen Wang.

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No conflict of interest exists in the submission of this manuscript, and the manuscript has been approved by all authors for publication. I would like to declare on behalf of my co-authors that the work described was original research that has not been published previously or is under consideration for publication elsewhere, in whole or in part. All the authors listed have approved the manuscript that is enclosed.

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Yan, S., Hu, W., Wang, S. et al. Electrochemical synthesis and dielectric performance of Sr-doped BaTiO3 nano-powders. J Mater Sci: Mater Electron 35, 1283 (2024). https://doi.org/10.1007/s10854-024-13074-6

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