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Effects of Dy doping amount and sintering process on the structure and dielectric properties of Sr1-3x/2DyxTiO3 ceramics

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Abstract

The Sr1-3x/2DyxTiO3 (x = 0.005, 0.01, 0.015, 0.02, 0.04, 0.06) ceramics are prepared sintered in N2 / air through a solid-state synthesis method. The effects of Dy doping amount and sintering process on the structure and dielectric properties of Sr1-3x/2DyxTiO3 ceramics were systematically investigated. We identify a novel Sr1-3x/2DyxTiO3 ceramic system sintered in N2 that exhibits the most superior dielectric performance when x = 0.01. At room temperature, the εr and tanδ of Sr0.985Dy0.01TiO3 ceramic sintered in N2 are 29,000 and 0.07 at a frequency of 1 kHz, and 27,000 and 0.01 at a frequency of 10 kHz, respectively. Additionally, the εr of Sr0.985Dy0.01TiO3 ceramics sintered in N2 has an excellent temperature stability at high temperatures, with a change rate within the range of ± 15% at a frequency of 10 kHz ranging from 30 to 480 ℃. Through comparing Sr0.985Dy0.01TiO3 ceramic sintered in air, sintering in N2 significantly improved its εr and thermal stability. This study demonstrates that the improvement of processing techniques and doping strategies have enhanced the dielectric properties of the ceramics.

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Acknowledgements

The work was partially supported by the Opening Project of Key Laboratory of Inorganic Functional Materials and Devices, Chinese Academy of Sciences (NO. KLIFMD202207).

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Authors and Affiliations

  1. School of Ocean Engineering, Jiangsu Ocean University, Lianyungang, 222005, People’s Republic of China

    Zhi Chen

  2. Guangxi Universities Key Laboratory of Non-Ferrous Metal Oxide Electronic Functional Materials and Devices, College of Materials Science and Engineering, Guilin Univeristy of Technology, Guilin, 541004, China

    Zhi Chen, Kang Liu, Guizhong Li, Tianxiang Yan & Xiuyun Lei

  3. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, China

    Shiguang Yan

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Contributions

Z. Chen: conceptualization, methodology, writing, formal analysis. K. Liu: investigation, data curation. G.Z. Li: investigation. S.G. Yan: investigation. T.X. Yan: review and editing. X.Y. Lei: conceptualization, validation.

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Correspondence to Tianxiang Yan or Xiuyun Lei.

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Chen, Z., Liu, K., Li, G. et al. Effects of Dy doping amount and sintering process on the structure and dielectric properties of Sr1-3x/2DyxTiO3 ceramics. Appl. Phys. A 130, 246 (2024). https://doi.org/10.1007/s00339-024-07398-7

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