Enhanced temperature stability in Tb-doped (Ba0.99Ca0.01)(Ti0.98Zr0.02)O3 lead free ceramics

Jinghan Gao, Qiang Li, Hairui Liu, Jaeshik Shim, Qingfeng Yan, Yiling Zhang, Xiangcheng Chu

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Lead-free (Ba0.99Ca0.01)(Ti0.98Zr0.02)O3 (BCZT)+x mol% Tb (x=0-0.6) ceramics were prepared using a solid-state reaction technique. Phase structure, dielectric constant, ferroelectricity and temperature-dependent piezoelectric coefficient were explored. With an increasing Tb content, the orthorhombic-tetragonal phase transition temperature (TO-T) shifted to lower temperature while its Curie temperature (Tc) remained at 130 °C. The temperature stability of piezoelectric coefficient (d33) could be enhanced from 30 to 120 °C in Tb-doped BCZT ceramics. A piezoelectric coefficient of d33=542 pm/V was obtained at x=0.2 with low temperature-dependent degradation from 30 to 120 °C. The results indicated that Tb-doped BCZT ceramics could be a promising candidate for commercial purposes.

Original languageEnglish (US)
Pages (from-to)2497-2501
Number of pages5
JournalCeramics International
Volume41
Issue number2
DOIs
StatePublished - Mar 1 2015

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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