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Phase composition, crystal structure, and microwave dielectric properties of 0.8Mg2SiO4–0.2Ca0.9Sm0.2/3Al4x/3Ti1−xO3 ceramics

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Abstract

0.8Mg2SiO4–0.2Ca0.9Sm0.2/3Al4x/3Ti1−xO3 (x = 0, 0.05, 0.1, 0.15, 0.2, and 0.25) ceramics with zero τf and high Q × f value were prepared by a traditional solid-state reaction method. The influences of Al content on phase evolution, sintering behavior, microstructure and microwave dielectric properties of ceramics have been systematically investigated. With the increase of x, the exchange of Ti4+ and Al3+ at B site leads to the decrease of dielectric constant and the increase of quality factor Q × f. The τf increases first and then decreases to close to 0 with a rise of x from 0.05 to 0.025. The results show that 0.8Mg2SiO4–0.2Ca0.9Sm0.2/3Al0.8/3Ti0.8O3 samples sintered at 1410 °C for 3 h exhibited excellent microwave dielectric properties: εr = 10.69, Q × f = 70,769 GHz, τf = − 0.66 ppm/°C. Therefore 0.8Mg2SiO4–0.2Ca0.9Sm0.2/3Al4x/3Ti1−xO3 ceramics are considered as potential candidates for microwave dielectric applications.

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The data that support the findings of this study are available from the corresponding author upon resonable request.

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Acknowledgements

This work was supported by the Program for Jiaxing Leading Innovative and Enterpreneurial Teams.

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Authors and Affiliations

  1. Department of Materials, Chongqing University of Technology, Chongqing, 400054, China

    Cong Tang, Yangfu Liu, Xueyu Yan & Fancheng Meng

  2. Jiaxing Glead Electronics Co. LTD, Jiaxing, 314000, China

    Shunguo Liu, Weiping Ge & Jianxi Tong

Authors
  1. Cong Tang
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  2. Yangfu Liu
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  3. Xueyu Yan
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  4. Shunguo Liu
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  5. Weiping Ge
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  7. Fancheng Meng
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Contributions

CT contributed to the experimentation, data analysis, collation, and manuscript preparation. YL contributed to the methodology, software, and theorization. XY contributed to the investigation and experimentation. SL and JT contributed to the theorization. WG contributed to the validation. FM contributed to writing, reviewing, and editing.

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Correspondence to Jianxi Tong or Fancheng Meng.

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Tang, C., Liu, Y., Yan, X. et al. Phase composition, crystal structure, and microwave dielectric properties of 0.8Mg2SiO4–0.2Ca0.9Sm0.2/3Al4x/3Ti1−xO3 ceramics. J Mater Sci: Mater Electron 33, 22119–22126 (2022). https://doi.org/10.1007/s10854-022-08981-5

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