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A Microwave Dielectric Ceramic with Ultra-low Dielectric Constant Prepared by Reaction Sintering Method

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Abstract

A CaO-Y2O3 microwave dielectric ceramic with large potential in the 5G field has been prepared using a reaction sintering method. The ceramic has an ultra-low dielectric constant, high Q, and near 0 τf. The reaction sintering method could shorten the stages of ceramic preparation, thereby reducing the factors of degradation of microwave dielectric properties caused by complex process fluctuations in the sintering process. The sample is composed of two phases, CaO and Y2O3 , the ceramic particles are closely connected, and the grain boundaries of the two grains are clear. When the sintering temperature is 1400°C, CaO-Y2O3 ceramics have the best microwave dielectric properties of εr = 4.30, Q×f = 33,360 GHz, τƒ =  − 13.79 ppm/°C, indicating that it is a good candidate in 5G devices.

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Acknowledgments

This study was supported by This study was supported by 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 (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.

Funding

Natural Science Foundation of China ,61761015, huanfu zhou, Natural Science Foundation of Guangxi Province, 2017GXNSFFA198011, huanfu zhou, Guizhou science and technology planning project, [2021] General Items 123, Qing Li.

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Authors and Affiliations

  1. Collaborative Innovation Centre for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi, 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

    Guoqiang He, Haiquan Wang, You Wu, Xiuli Chen, Jun Liang & Huanfu Zhou

  2. Guiyang Sunlord Xunda Electronics Co, Ltd, Guiyang, 550014, China

    Qing Li

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  1. Guoqiang He
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Correspondence to Jun Liang or Huanfu Zhou.

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He, G., Wang, H., Li, Q. et al. A Microwave Dielectric Ceramic with Ultra-low Dielectric Constant Prepared by Reaction Sintering Method. J. Electron. Mater. 51, 5026–5031 (2022). https://doi.org/10.1007/s11664-022-09630-7

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