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Journal of Advanced Ceramics 2019, 8(2): 186-195 https://doi.org/10.1007/s40145-018-0304-2
Research Article | Open Access | Issue | Published: 13 June 2019

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

Show Author's Information Raziye HAYATIa( ),  Mohammad Ali BAHREVARa,  Yadolah GANJKHANLOUb,  Virginia ROJASc,  Jurij KORUZAc
Semiconductor Division, Materials and Energy Research Center, Karaj 31787/316, Iran
Department of Chemistry, NIS and INSTM Reference Centre, Università di Torino, Torino 10125, Italy
Institute of Materials Science, Technische Universität Darmstadt, Darmstadt 64287, Germany
Keywords:
lead-free piezoceramic, (Ba,Ca)(Zr,Ti)O3 (BCZT), cerium, actuator
An erratum to this article is available online at https://doi.org/10.1007/s40145-019-0351-3
Cite this article:
HAYATI R, BAHREVAR MA, GANJKHANLOU Y, et al. Electromechanical properties of Ce-doped (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramics. Journal of Advanced Ceramics, 2019, 8(2): 186-195. https://doi.org/10.1007/s40145-018-0304-2
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Abstract Full text About this article

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.


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About this article

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

Show Author's information Raziye HAYATIa( ), Mohammad Ali BAHREVARa, Yadolah GANJKHANLOUb, Virginia ROJASc, Jurij KORUZAc
Semiconductor Division, Materials and Energy Research Center, Karaj 31787/316, Iran
Department of Chemistry, NIS and INSTM Reference Centre, Università di Torino, Torino 10125, Italy
Institute of Materials Science, Technische Universität Darmstadt, Darmstadt 64287, Germany

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

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Publication history
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Publication history

Received: 01 August 2018
Revised: 29 October 2018
Accepted: 08 November 2018
Published: 13 June 2019
Issue date: June 2019

Copyright

© The author(s) 2019

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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