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

Hayati, Raziye and Bahrevar, Mohammed Ali and Ganjkhanlou, Yadolah and Rojas, Virginia and Koruza, Jurij (2019):
Electromechanical properties of Ce-doped (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramics.
In: Journal of Advanced Ceramics, SpringerOpen, pp. 186-198, 8, (2), ISSN 2226-4108,
DOI: 10.1007/s40145-018-0304-2,
[Article]

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.

Item Type: Article
Erschienen: 2019
Creators: Hayati, Raziye and Bahrevar, Mohammed Ali and Ganjkhanlou, Yadolah and Rojas, Virginia and Koruza, Jurij
Title: Electromechanical properties of Ce-doped (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramics
Language: English
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.

Journal or Publication Title: Journal of Advanced Ceramics
Volume: 8
Number: 2
Publisher: SpringerOpen
Uncontrolled Keywords: lead-free piezoceramic; (Ba,Ca)(Zr,Ti)O3 (BCZT); cerium; actuator
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 14 Jun 2019 07:44
DOI: 10.1007/s40145-018-0304-2
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