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Journal of Advanced Ceramics

, Volume 8, Issue 2, pp 186–195 | Cite as

Electromechanical properties of Ce-doped (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramics

  • Raziye HayatiEmail author
  • Mohammad Ali Bahrevar
  • Yadolah Ganjkhanlou
  • Virginia Rojas
  • Jurij Koruza
Open Access
Research Article
  • 13 Downloads

Abstract

Lead-free piezoceramics based on the (Ba, Ca)(Zr, Ti)O3 (BCZT) system exhibit excellent electromechanical properties for low-temperature actuation applications, but suffer from relatively high processing temperatures. Here we demonstrate an approach for the reduction of the sintering temperature and simultaneous increase of the electromechanical strain response of (Ba, Ca)(Zr, Ti)O3 piezoceramics by aliovalent doping with Ce. The samples were prepared by solid state synthesis and their crystallographic structure, dielectric, ferroelectric, and electromechanical properties were investigated. The highest d*33 value of 1189 pm/V was obtained for the sample with 0.05 mol% Ce, substituted on the A-site of the perovskite lattice. The results indicate a large potential of these materials for off-resonance piezoelectric actuators.

Keywords

lead-free piezoceramic (Ba,Ca)(Zr,Ti)O3 (BCZT) cerium actuator 

Notes

Acknowledgements

This work was funded by Ministry of Science, Research and Technology of Iran as a Ph.D. project, with Grant No. 481392053, at Materials & Energy Research Center (MERC). It was also partially supported by Deutsche Forschungsgemeinschaft under the Sonderforschungsbereich 595 (SFB 595) fellowship.

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Authors and Affiliations

  • Raziye Hayati
    • 1
    Email author
  • Mohammad Ali Bahrevar
    • 1
  • Yadolah Ganjkhanlou
    • 2
  • Virginia Rojas
    • 3
  • Jurij Koruza
    • 3
  1. 1.Semiconductor DivisionMaterials and Energy Research CenterKarajIran
  2. 2.Department of Chemistry, NIS and INSTM Reference CentreUniversità di TorinoTorinoItaly
  3. 3.Institute of Materials ScienceTechnische Universität DarmstadtDarmstadtGermany

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