Electromechanical properties of (Ba,Sr)(Zr,Ti)O3 ceramics

  • Yao Li
  • , Hongbo Cheng
  • , Huiwen Xu
  • , Yunxiang Zhang
  • , Peng Yan
  • , Ting Huang
  • , Chunming Wang
  • , Zhigao Hu
  • , Jun Ouyang*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

In this work, we report dielectric, piezoelectric and ferroelectric properties of perovskite Ba0.95Sr0.05ZrxTi(1-x)O3 (BSZT, x=0.05, 0.10, 0.15, 0.20) ceramics synthesized by using a solid-state reaction method. It is demonstrated that when the Zr concentration was 5 at% and the sintering temperature was 1400 °C, the BSZT ceramic gives the best overall electromechanical performance, including a large remnant polarization of ∼ 12.1 μC/cm2, large dielectric constants (ϵrpeak≈12,600, ϵrRT≈3500) and an excellent d33 value of ∼355 pC/N. Curie temperature of this ceramic is about ∼100 °C. The enhanced electromechanical properties of the BSZT ceramics as compared with Ba0.95Sr0.05TiO3 (BST) can be explained by optimization of the tolerance factor and shift of ferroelectric polymorphic phase transition temperatures (TPPT).

Original languageEnglish
Pages (from-to)10191-10196
Number of pages6
JournalCeramics International
Volume42
Issue number8
DOIs
StatePublished - 1 Jun 2016

Keywords

  • Barium titanate
  • Lead-free piezoceramics
  • Phase structure
  • Piezoelectricity
  • Polymorphic phase transition

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