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Phase compositions and microwave dielectric properties of MgTiO3-based ceramics obtained by reaction-sintering method

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Abstract

MgTiO3-based microwave dielectric ceramics were prepared successfully by reaction sintering method. The X-ray diffraction patterns of the sintered samples revealed a major phase of MgTiO3-based and CaTiO3 phases, accompanied with Mg2TiO4 or MgTi2O5 determined by the sintering temperature and time. The microwave dielectric properties had a strong dependence of sintering condition due to the different phase compositions and the microstructure characteristics. The ceramics sintered at 1360 °C for 4 h exhibited good microwave dielectric properties: a dielectric constant of 20.3, a high quality factor of 48,723 GHz (at 9GHz), and a temperature coefficient of resonant frequency of −1.8 ppm/oC. The obtained results demonstrated that the reaction-sintering process is a simple and effective method to prepare the MgTiO3-based ceramics for microwave applications.

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Acknowledgements

We appreciate the assistance from Suzhou Boom High Purtiy Materials Technology Co., Ltd. This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, People’s Republic of China

    Lei He, Hongtao Yu, Mengshi Zeng & Jingsong Liu

  2. State Key Laboratory of Electronic Thin films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, People’s Republic of China

    Enzhu Li & Shuren Zhang

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  1. Lei He
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  2. Hongtao Yu
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  3. Mengshi Zeng
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  4. Enzhu Li
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  5. Jingsong Liu
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  6. Shuren Zhang
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Correspondence to Hongtao Yu.

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He, L., Yu, H., Zeng, M. et al. Phase compositions and microwave dielectric properties of MgTiO3-based ceramics obtained by reaction-sintering method. J Electroceram 40, 360–364 (2018). https://doi.org/10.1007/s10832-018-0138-x

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  • DOI: https://doi.org/10.1007/s10832-018-0138-x

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