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Structure and dielectric properties of a novel defect pyrochlore Bi1.34Fe0.66Nb1.34O6.35 ceramic

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Abstract

Lead-free ceramic with the composition of Bi1.34Fe0.66Nb1.34O6.35 was prepared by a solid state reaction method. The phase structure, microstructure and dielectric performances of Bi1.34Fe0.66Nb1.34O6.35 ceramic were systematically investigated. X-ray diffraction pattern showed that the ceramic has a cubic pyrochlore structure with a unit cell parameter of a = 10.4998 Å. When the sintering temperature was 1000 °C, the ceramic possessed excellent dielectric performance with high relative permittivity of ~165 and low dielectric loss of ~1 %. Furthermore, Bi1.34Fe0.66Nb1.34O6.35 ceramic exhibits a near-zero temperature coefficient of ~+ 21 ppm/°C, which indicates that this ceramic is a promising candidate for thermally stable devices.

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Acknowledgments

This work was supported by Natural Science Foundation of China (Nos. 11364012 and 11464009), Natural Science Foundation of Guangxi (Nos. 2015GXNSFDA139033, 2014GXNSFAA118326 and 2014GXNSFAA118312). Project of Outstanding Young Teachers’ Training in Higher Education Institutions of Guangxi.

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Authors and Affiliations

  1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Guangxi Key Laboratory in Universities of Clean Metallurgy and Comprehensive Utilization for Non-ferrous Metals Resources, School of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, China

    Xiuli Chen, Dandan Ma, Guisheng Huang, Gaofeng Liu & Huanfu Zhou

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  1. Xiuli Chen
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  2. Dandan Ma
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  3. Guisheng Huang
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  4. Gaofeng Liu
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  5. Huanfu Zhou
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Correspondence to Xiuli Chen or Huanfu Zhou.

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Chen, X., Ma, D., Huang, G. et al. Structure and dielectric properties of a novel defect pyrochlore Bi1.34Fe0.66Nb1.34O6.35 ceramic. J Mater Sci: Mater Electron 27, 8619–8622 (2016). https://doi.org/10.1007/s10854-016-4881-y

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  • DOI: https://doi.org/10.1007/s10854-016-4881-y

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