Sintering temperature dependences of (1 &minus; <i>y</i>)(Mg<sub>0.95</sub>Mn<sub>0.05</sub>)<sub>2</sub>(Ti<sub>0.95</sub>Sn<sub>0.05</sub>)O<sub>4</sub>&ndash;<i>y</i>(Ca<sub>0.6</sub>La<sub>0.8/3</sub>)TiO<sub>3</sub> microwave dielectric ceramics with a zero temperature coefficient of resonant frequency

DOI Web Site 参考文献12件
  • LI Bing-Jing
    Department of Electrical Engineering, National Cheng Kung University
  • WANG Sih-Yin
    Department of Electrical Engineering, National Cheng Kung University
  • HONG Guo-Jhe
    Department of Electrical Engineering, National Cheng Kung University
  • HUANG Cheng-Liang
    Department of Electrical Engineering, National Cheng Kung University
  • CHEN Yuan-Bin
    Department of Engineering and Management of Advanced Technology, Chang Jung Christian University

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  • Sintering temperature dependences of (1 − <i>y</i>)(Mg<sub>0.95</sub>Mn<sub>0.05</sub>)<sub>2</sub>(Ti<sub>0.95</sub>Sn<sub>0.05</sub>)O<sub>4</sub>–<i>y</i>(Ca<sub>0.6</sub>La<sub>0.8/3</sub>)TiO<sub>3</sub> microwave dielectric ceramics with a zero temperature coefficient of resonant frequency

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High-quality (1 − y)(Mg0.95Mn0.05)2(Ti0.95Sn0.05)O4–y(Ca0.6La0.8/3)TiO3 ceramics were prepared by solid-state reaction. The products were characterized by scanning electron microscopy, X-ray diffraction, and network analyzer. (Mg0.95Mn0.05)2(Ti0.95Sn0.05)O4 has a dielectric constant (εr) of ~14.21, a high quality factor (Q×f) of ~347,000 GHz, and a temperature coefficient of resonant frequency (τf) of ~−57.94 ppm/°C. To produce a temperature-stable material, (Ca0.6La0.8/3)TiO3, which has a large positive τf value of +212 ppm/°C, was added to 0.65(Mg0.95Mn0.05)2(Ti0.95Sn0.05)O4–0.35(Ca0.6La0.8/3)TiO3 has an excellent combination of microwave dielectric properties: εr ~24.88, Q×f ~133,000, and τf = 0 ppm/°C sinter at 1325°C, and can be utilized in the fabrication of microwave devices.

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