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Effect of do** ion concentration on the microstructure and dielectric properties of (Na1/2Eu1/2)xCa1−xCu3Ti4O12 ceramics

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Abstract

A series of single phase (Na1/2Eu1/2)xCa1−xCu3Ti4O12 (x = 0, 0.01, 0.05, 0.1, 0.2, 0.3, 0.35, 0.4 and 0.45) ceramics with different do** amounts were successfully prepared by high temperature solid-state reaction method. The microstructure, ion valence, and dielectric properties of the ceramics were systematically studied. The results indicated that with the increase of Na+ and Eu3+ ions concentration in (Na1/2Eu1/2)xCa1−xCu3Ti4O12 ceramics, Na and Eu elements accumulated at the grain boundaries of ceramics, thereby increasing the insulation of grain boundaries and effectively reducing the dielectric loss of the ceramics. However, the presence of Cu+ in (Na1/2Eu1/2)xCa1−xCu3Ti4O12 (x ≥ 0.3) ceramics with high do** content could affect the polarization mechanism inside the ceramics and improve their dielectric properties. The dielectric constant of (Na1/2Eu1/2)0.3Ca0.7Cu3Ti4O12 ceramics was as high as 25 282, with a dielectric loss of 0.061 (at room temperature and 10 Hz), and it had good dielectric stability.

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The datasets analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was financially supported in part by Guizhou Province Education Ministry (QJHKY[2020]101), Scientific Research Foundation of Guizhou Province (QKHPTRC[2018]5784-02), and Doctor Foundation of Zunyi Normal collage (ZSBS[2019]03).

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Authors and Affiliations

  1. College of Physics and Electronic Science, Zunyi Normal College, Zunyi, 563006, China

    Longfei Yuan, Yongguo **a & Die Zuo

  2. College of Chemistry and Chemical Engineering, Zunyi Normal College, Zunyi, 563006, China

    Ting Zhang & Cheng Fang

  3. College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, China

    Dandan Han

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  1. Longfei Yuan
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All authors read and approved the final manuscript. LFY, CF, and DDH did the material prepared/characterizations and electrical measurements of the samples. YGX, DZ, and TZ clarified the experimental data and came out with the manuscript. LFY is the group leader and conducted the investigation of this work.

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Correspondence to Longfei Yuan.

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Yuan, L., ** ion concentration on the microstructure and dielectric properties of (Na1/2Eu1/2)xCa1−xCu3Ti4O12 ceramics. J Mater Sci: Mater Electron 35, 751 (2024). https://doi.org/10.1007/s10854-024-12485-9

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