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Effect of Ta2O5 additive on the properties of (Mg0.75Zn0.25)TiO3 ceramics with high frequency and high Q-value

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Abstract

The (Mg0.75Zn0.25)TiO3 ceramics with Ta2O5 additive were prepared with solid-state reaction method. Ta2O5 as an additive effectively lowered the sintering temperature to 1100 °C and improved the microstructure of the ceramics. Ta5+ was completely incorporated into the (Mg0.75Zn0.25)TiO3 lattice to form the ilmenite phase (R-3), alongside the emergence of a second phase, MgTi2O5. The increasing content of the second phase caused the cell volume of the main phase to increase. When the Ta2O5 content is less than 5 wt%, the density of the ceramics has the main effect on the εr, while above 5 wt%, the second phase plays a dominant role in the εr of the ceramics. The results showed that when the additive of Ta2O5 is 2 wt%, the ceramics sintered at 1100 °C for 3 h exhibited the excellent microwave dielectric properties of Q × f ~ 108,726 (at 7.9 GHz), εr ~ 18.73 and τf ~  − 59.76 ppm/°C.

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Funding

This work was supported by the National Natural Science Foundation of China (No.52102129).

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Authors and Affiliations

  1. The 13th Research Institute China Electronics Technology Group Corporation, Shijiazhuang, 050057, China

    Tao Yu

  2. College of Electrical and Information Engineering, Hunan University, Changsha, 410082, Hunan, China

    Zhicong Chen, Chang Jiang, Hongkang Liang, Hongzhi Xiao, Qianbiao Du & Hao Li

Authors
  1. Tao Yu
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  2. Zhicong Chen
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  3. Chang Jiang
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  4. Hongkang Liang
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  5. Hongzhi Xiao
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  6. Qianbiao Du
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  7. Hao Li
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Contributions

Tao Yu: Conceptualization, Methodology, Investigation, Data curation, Writing—original draft. Zhicong Chen: Methodology, Investigation, Data curation. Chang Jiang: Formal analysis, Investigation. Hongkang Liang: Conceptualization, Methodology. Hongzhi Xiao: Conceptualization, Formal analysis. Qianbiao Du: Conceptualization, Methodology, Formal analysis, Investigation, Data curation, Writing—original draft, Writing—review & editing. Li Hao: Writing—review & editing, Investigation, Funding acquisition.

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Correspondence to Tao Yu, Qianbiao Du or Hao Li.

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Yu, T., Chen, Z., Jiang, C. et al. Effect of Ta2O5 additive on the properties of (Mg0.75Zn0.25)TiO3 ceramics with high frequency and high Q-value. J Mater Sci: Mater Electron 35, 1718 (2024). https://doi.org/10.1007/s10854-024-13477-5

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  • DOI: https://doi.org/10.1007/s10854-024-13477-5

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