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Chemical bond characteristics and microwave dielectric properties of high-Q × f Li3+xMgNbO5Fx (0 ≤ x ≤ 1.25) ceramics for LTCC applications

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Abstract

A novel series of oxyfluoride rock salt-structured Li3+xMgNbO5Fx (0 ≤ x ≤ 1.25) ceramic specimens were prepared via a solid-state reaction route. The phase composition, microstructures, and microwave dielectric properties of the samples were investigated. The chemical bond theory was employed to reveal the composition dependence of the microwave dielectric properties of the Li3+xMgNbO5Fx samples. The optimal microwave dielectric properties of εr = 16.1, Q × f = 79200 GHz, τf=-40.8 ppm/°C were obtained in the specimen with x = 0.75 when sintered at 900℃. Additionally, the Li3.75MgNbO5F0.75 ceramics showed excellent chemical compatibility with Ag electrodes, which suggests that the present samples are promising candidate materials for low-temperature co-fired ceramic (LTCC) applications.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 11774083 and 51902093).

Funding

This work was supported by the National Natural Science Foundation of China (Grant Nos. 11774083 and 51902093).

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Authors and Affiliations

  1. Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Ministry of Education Key Laboratory for Green Preparation and Application of Functional Materials, School of Material Science and Engineering, Hubei University, Wuhan, 430062, China

    Shiheng Xu, Lin Gan, Juan Jiang, Jinzhao Wang & Tianjin Zhang

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  1. Shiheng Xu
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  2. Lin Gan
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  3. Juan Jiang
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  5. Tianjin Zhang
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Contributions

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

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Correspondence to Lin Gan or Tianjin Zhang.

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Xu, S., Gan, L., Jiang, J. et al. Chemical bond characteristics and microwave dielectric properties of high-Q × f Li3+xMgNbO5Fx (0 ≤ x ≤ 1.25) ceramics for LTCC applications. J Mater Sci: Mater Electron 34, 2240 (2023). https://doi.org/10.1007/s10854-023-11627-9

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