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Low temperature sintering and dielectric properties of Ba3(VO4)2 microwave ceramics using Co2O3 additives

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Abstract

The Ba3(VO4)2–x wt% Co2O3 (x = 0.5–5) ceramics were prepared by the solid state reaction method in order to reduce the sintering temperature. The effects of the Co2O3 additions on the phase composition, microstructures, sintering characteristics and microwave dielectric properties of Ba3(VO4)2 ceramics are investigated by an X-ray diffractometer, a scanning electron microscope and a network analyzer. As a result, the Q × f value of 54,000 GH, the ε r of 14.6 and the τf value of +58.5 ppm/°C were obtained in the sample of the Ba3(VO4)2–3 wt% Co2O3 ceramic sintered at the temperature of 925 °C, which is capable to co-fire with electrode metal of high conductivity such as Ag (961 °C). Moreover, the Q × f values of the sample with Co2O3 higher than that of 3 wt% additions decreased because of the formation of Ba2V2O7 phase.

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Acknowledgements

This work is supported by Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), Natural Science Foundation of the Jiangsu province under Grant (No. BK20141460), National Natural Science Foundation of China (No. 51502132), State Key Laboratory of Advanced Materials and Electronic Components (No. FH2015RDZ001), Science and Technology Projects of Guangdong Province (No. 2011A091103002) and the Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites.

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Authors and Affiliations

  1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, Jiangsu, China

    Zhiyuan Zhang, Haikui Zhu, Yaoyao Li, Long Li & Qitu Zhang

  2. Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing, 210009, Jiangsu, China

    Zhiyuan Zhang, Haikui Zhu, Yaoyao Li & Qitu Zhang

  3. Guangdong Fenghua Advanced Technology Company Limited, Zhaoqing, 526020, Guangdong, China

    Zhenxiao Fu & Kun Huang

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  1. Zhiyuan Zhang
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  2. Haikui Zhu
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  3. Yaoyao Li
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  4. Long Li
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  5. Zhenxiao Fu
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  6. Kun Huang
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  7. Qitu Zhang
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Correspondence to Haikui Zhu.

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Zhang, Z., Zhu, H., Li, Y. et al. Low temperature sintering and dielectric properties of Ba3(VO4)2 microwave ceramics using Co2O3 additives. J Mater Sci: Mater Electron 28, 18474–18479 (2017). https://doi.org/10.1007/s10854-017-7794-5

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  • DOI: https://doi.org/10.1007/s10854-017-7794-5

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