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Enhanced dielectric and piezoelectric properties in BaZrO3 modified BiFeO3–PbTiO3 high temperature ceramics

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Abstract

(0.67–x)BiFeO3–0.33PbTiO3–xBaZrO3 (BF–PT–BZ) ceramics were prepared by conventional solid state reaction method. X-ray diffraction analysis indicated that a phase transformation from tetragonal (T) to rhombohedral (R) took place with increasing the BZ content, and the coexistence of two phases were observed near the composition range from 0.08 to 0.12. Introduction of BZ reduced the c/a ratio, decreased the grain size, and improved the dielectric as well as piezoelectric properties obviously. Both high Curie temperature and good electrical properties were obtained in the BF–PT–BZ solid solutions with x = 0.08. The Curie temperature T C, dielectric constant ε r, dielectric loss tan δ, piezoelectric constant d 33, electromechanical coupling factor k p were 540 °C, 640, 0.02, 117 pC/N, 0.34, respectively. The depolarization temperature T d was 470 °C, about 320 °C higher than that of commercialized PZT ceramics, showing better electrical thermal stability.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (Grant No. 51302163) and the Innovational Foundation of Shanghai University (Grant No. K. 10-0110-13-009).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shanghai University, Shanghai, 200072, China

    Qiang Li, Yingjie Dong, Jinrong Cheng & Jianguo Chen

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  1. Qiang Li
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  2. Yingjie Dong
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  3. Jinrong Cheng
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  4. Jianguo Chen
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Correspondence to Jianguo Chen.

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Li, Q., Dong, Y., Cheng, J. et al. Enhanced dielectric and piezoelectric properties in BaZrO3 modified BiFeO3–PbTiO3 high temperature ceramics. J Mater Sci: Mater Electron 27, 7100–7104 (2016). https://doi.org/10.1007/s10854-016-4671-6

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  • DOI: https://doi.org/10.1007/s10854-016-4671-6

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