Electromechanical properties of Ce-doped (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free piezoceramics
| Autor: | Jurij Koruza, Virginia Rojas, Raziye Hayati, Mohammad Ali Bahrevar, Yadolah Ganjkhanlou |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Structural material Doping Analytical chemistry lead-free piezoceramic Sintering 02 engineering and technology Crystal structure Dielectric 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Electronic Optical and Magnetic Materials lcsh:TP785-869 cerium lcsh:Clay industries. Ceramics. Glass Lattice (order) 0103 physical sciences Ceramics and Composites (Ba Ca)(Zr Ti)O3 (BCZT) Piezoelectric actuators 0210 nano-technology actuator |
| Zdroj: | Journal of Advanced Ceramics, Vol 8, Iss 2, Pp 186-195 (2019) |
| ISSN: | 2227-8508 2226-4108 |
| DOI: | 10.1007/s40145-018-0304-2 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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