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Microstructures and microwave dielectric properties of (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 solid solutions

Journal of Advanced Ceramics volume 6, pages 50–58 (2017)Cite this article

Abstract

(Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 (x = 0.02, 0.04, 0.06, 0.08, 0.1) solid solutions were prepared by the conventional solid-state reaction process. It was found that (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 ceramics are fully composed of BaSm2Ti4O12 and BaNd2Ti5O14 phases for all the compositions. The increasing x value (0.02 ≤ x ≤ 0.1) in ((Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 ceramics can not only obtain high Q × f value but also effectively enhance the permittivity (εr). The (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 ceramic with x = 0.08, sintered at 1440 °C for 4 h, shows excellent microwave dielectric properties of permittivity (εr) ≈ 93.19, quality factor (Q × f) ≈ 9770.14 GHz (at 3.415 GHz), and almost near-zero temperature coefficient of resonant frequency (τf) ≈ +4.56 ppm/°C.

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Acknowledgements

Financial supports of the National Natural Science Foundation of China (Grant No. 11464006) and the Middle-aged and Young Teachers in Colleges and/or Universities in Guangxi Basic Ability Promotion Project of China (Grant No. KY2016YB534) are gratefully acknowledged by the authors.

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Affiliations

  1. School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China

    Xianpei Huang, Xinyu Liu, Changlai Yuan, Jiwen Xu, Changrong Zhou & Guohua Chen

  2. School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, 541004, China

    Fei Liu

  3. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004, China

    Changlai Yuan

  4. Department of Information Engineering, Guilin University of Aerospace Technology, Guilin, 541004, China

    Jingjing Qu

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  1. Xianpei Huang
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  2. Xinyu Liu
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Correspondence to Fei Liu.

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Huang, X., Liu, X., Liu, F. et al. Microstructures and microwave dielectric properties of (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 solid solutions. J Adv Ceram 6, 50–58 (2017). https://doi.org/10.1007/s40145-016-0217-x

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  • DOI: https://doi.org/10.1007/s40145-016-0217-x

Keywords

  • tungsten bronze type
  • high permittivity
  • microwave dielectric properties