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Low dielectric loss characteristics of [(Mg1−xZnx)0.95Co0.05]1.02TiO3.02 ceramics at microwave frequencies

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Abstract

Low-loss microwave dielectric materials systems of [(Mg1−xZnx)0.95Co0.05]1.02TiO3.02 ceramics were fabricated using solid-state synthesis. Partial Zn2+ and Co2+ substitutions for Mg2+ of [(Mg1−xZnx)0.95Co0.05]1.02TiO3.02 enhanced the Q × f value and allowed densification sintering at lower temperature than MgTiO3 which must be sintered around 1350–1400 °C. [(Mg0.6Zn0.4)0.95Co0.05]1.02TiO3.02 sintered at 1175 °C has an excellent microwave dielectric properties with dielectric constant of 20.1, a Q × f value of 280,000 GHz, and a τf value of −64.7 ppm/°C. (Mg0.6Zn0.4)0.95Co0.05]1.02TiO3.02 ceramic shows high potential for applications in mobile communications.

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Acknowledgements

The authors would like to express their appreciation for financial support for the Ministry of Science and Technology, Taiwan, R.O.C under Contract Nos. MOST 104-2221-E-029-029 and 105-2221-E-029-004.

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Authors and Affiliations

  1. Department of Electrical Engineering, Tunghai University, Taichung, 40704, Taiwan

    Shih-Hung Lin

  2. Department of Engineering and Management of Advanced Technology, Chang Jung Christian University, Tainan, 71101, Taiwan

    Yuan-Bin Chen

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  1. Shih-Hung Lin
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  2. Yuan-Bin Chen
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Correspondence to Shih-Hung Lin or Yuan-Bin Chen.

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Lin, SH., Chen, YB. Low dielectric loss characteristics of [(Mg1−xZnx)0.95Co0.05]1.02TiO3.02 ceramics at microwave frequencies. J Mater Sci: Mater Electron 28, 4154–4160 (2017). https://doi.org/10.1007/s10854-016-6035-7

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  • DOI: https://doi.org/10.1007/s10854-016-6035-7

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