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Sintering Behavior, Phase Structure, and Microwave Dielectric Properties of Low-Permittivity Li5Al5Zn8Ge9O36 Ceramics

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Abstract

A low-permittivity Li5Al5Zn8Ge9O36 microwave dielectric ceramic was prepared via a conventional solid-phase reaction, and its sintering behavior, phase structure, and microwave dielectric properties were investigated. The Li5Al5Zn8Ge9O36 ceramic had a cubic spinel structure, and no other phases were detected. The microstructure of the ceramic was relatively uniform and dense. The Li5Al5Zn8Ge9O36 ceramic sintered at 1150°C exhibited excellent microwave dielectric properties (εr = 6.66, Q × f = 24,600 GHz, and τf = −38 ppm/°C), indicating that it is a good candidate for microwave equipment.

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Acknowledgments

This work was supported by the Natural Science Foundation of China (Nos. 61761015 and 11664008), Natural Science Foundation of Guangxi (Nos. 2017GXNSFFA198011, 2018GXNSFFA050001 and 2017GXNSFDA198027) and High Level Innovation Team and Outstanding Scholar Program of Guangxi Institutes.

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Authors and Affiliations

  1. Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, China

    Shan Deng, Xin Qu, Yaqi Xiao, Haiqing Deng, Pengxiang Gao, Xiuli Chen & Huanfu Zhou

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  1. Shan Deng
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  2. Xin Qu
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  3. Yaqi Xiao
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Deng, S., Qu, X., Xiao, Y. et al. Sintering Behavior, Phase Structure, and Microwave Dielectric Properties of Low-Permittivity Li5Al5Zn8Ge9O36 Ceramics. J. Electron. Mater. 52, 2932–2939 (2023). https://doi.org/10.1007/s11664-023-10295-z

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