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Novel Series of Low-Firing Microwave Dielectric Ceramics: (1−x)Li3Bi2P3O12xTiO2

Authors

  • Xiaobin Liu,

    1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin, China
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  • Huanfu Zhou,

    Corresponding author
    • State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin, China
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  • Fang Liang,

    Corresponding author
    • State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin, China
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  • Xiuli Chen,

    1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin, China
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  • Wei Wang,

    1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin, China
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  • Cheng Wang,

    1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin, China
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  • Fen He

    1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin, China
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Author to whom correspondence should be addressed. e-mail: zhouhuanfu@163.com and fanglianggl001@yahoo.cn

Abstract

A new thermally stable microwave dielectric ceramic with low-firing temperature in (1−x)Li3Bi2P3O12xTiO2 [(1−x)LBPxT, 0 ≤ x ≤ 0.6] ceramics system was obtained using conventional solid-state reaction method. The phase transformation, microstructure, and microwave dielectric properties of materials were investigated using X-ray powder diffraction (XRD), scanning electron microscopy (SEM) , and a network analyzer. The LBP ceramic (= 0) sintered at 725°C has optimum microwave dielectric properties with relative permittivity (εr) of 15.8, × f of 26 600 GHz and temperature coefficients of resonant frequency (τf) of −130 ppm/°C. The εr and τf of (1−x)LBP–xT ceramics were tailored with increasing x values. At = 0.55, the ceramic exhibits improved microwave dielectric properties with εr = 22.1, × f = 14 900 GHz and τf = −2.6 ppm/°C.

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