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Journal of Materials Science

, Volume 54, Issue 6, pp 4511–4517 | Cite as

Enhanced dielectric strength and energy storage density in BaTi0.7Zr0.3O3 ceramics via spark plasma sintering

  • Bing LiuEmail author
  • Yi Wu
  • Yu Hui HuangEmail author
  • Kai Xin Song
  • Yong Jun WuEmail author
Ceramics
  • 353 Downloads

Abstract

Barium zirconate titanate (BaTi0.7Zr0.3O3) ceramics were prepared via spark plasma sintering (SPS) and conventional solid-state sintering (CS). Both samples exhibited single phase nature as confirmed from the X-ray diffraction analysis. Compared with CS sample, more homogeneous microstructure with smaller grain size was observed in the SPS sample, which greatly improved the dielectric strength of BaTi0.7Zr0.3O3 ceramics from 40 (CS) to 170 kV/cm (SPS). Although the polarization of SPS sample was lower than that of CS sample under the same applied electric field, the maximum energy storage density was improved to 0.51 J/cm3, which was about 4.5 times higher than that of the CS sample (0.12 J/cm3). Moreover, finite element simulation on the local dielectric field distribution was carried out, and the effects of microstructure on the dielectric strength were further confirmed.

Notes

Acknowledgements

This work was financially supported by the Postdoctoral Science Foundation of Zhejiang Province, Natural Science Foundation of Zhejiang Province (No. LZ17E020003) and National Natural Science Foundation of China (Nos. 51572237, 51802280, 51802062).

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.College of Electronic Information and EngineeringHangzhou Dianzi UniversityHangzhouChina
  2. 2.Laboratory of Dielectric Materials, School of Materials Science and EngineeringZhejiang UniversityHangzhouChina

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