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Microwave dielectric properties of (1 − x)ZnNb2O6–xBa(Zn1/3Nb2/3)O3 compound ceramic with near zero temperature coefficient

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Abstract

The phase composition, microstructures, sintering behavior, and microwave dielectric properties of (1 − x)ZnNb2O6–xBa(Zn1/3Nb2/3)O3 (x = 0.25, 0.30, 0.35, 0.40) ceramics prepared via conventional solid-state route were systematically investigated as a function of x value and sintering temperature. The ixiolite ZnNb2O6, perovskite Ba(Zn1/3Nb2/3)O3, and a minor phase of Ba3Zn1/3Nb14/3O15 were obtained throughout the studied compositional range. The variation of bulk density and dielectric properties are related to the x value. With increasing molar fraction of Ba(Zn1/3Nb2/3)O3, the temperature coefficient of resonant frequency (τ f ) value decreased, and a near-zero τ f value could be obtained for the samples with x = 0.30. The optimum microwave dielectric properties with an ε r value of 31.22, a Q × f value of 39,611 GHz (at 5.5 GHz), and a τ f value of − 2.28 ppm/°C were obtained for 0.7ZnNb2O6–0.3Ba(Zn1/3Nb2/3)O3 ceramics sintered at 1200 °C for 4 h, which showed dense microstructures as well as well-developed grain growth.

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Acknowledgements

The authors are grateful to the support of Program for Advanced Research and Key Technology in Industry of Jiangsu Province (BE2015007-1), the National Natural Science Foundation (No. 51475219) and the Talent Introduction Project of Jiangsu University of Technology (KYY16030).

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Authors and Affiliations

  1. School of Mechanical Engineering, Jiangsu University of Technology, Changzhou, 213001, Jiangsu, China

    Wentao Xie, Qinxian Jiang & Qinglin Cao

  2. College of Material Science and Engineering, Nanjing Tech University, Nanjing, 210009, Jiangsu, China

    Hongqing Zhou, Luchao Ren & Xianfu Luo

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  1. Wentao Xie
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  2. Qinxian Jiang
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  3. Qinglin Cao
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  4. Hongqing Zhou
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  6. Xianfu Luo
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Correspondence to Wentao Xie.

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Xie, W., Jiang, Q., Cao, Q. et al. Microwave dielectric properties of (1 − x)ZnNb2O6–xBa(Zn1/3Nb2/3)O3 compound ceramic with near zero temperature coefficient. J Mater Sci: Mater Electron 29, 2170–2174 (2018). https://doi.org/10.1007/s10854-017-8129-2

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  • DOI: https://doi.org/10.1007/s10854-017-8129-2

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