Relationship between composition and electromechanical properties of CuO-doped textured PYN-PMN-PT ceramics
| Autor: | Michael J. Brova, Rebecca L. Walton, Gary L. Messing, Beecher H. Watson, Elizabeth R. Kupp, Richard J. Meyer, Mark A. Fanton |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Phase boundary Materials science Doping 02 engineering and technology Coercivity 021001 nanoscience & nanotechnology 01 natural sciences Piezoelectricity chemistry.chemical_compound Hysteresis chemistry Residual stress visual_art 0103 physical sciences Barium titanate Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Composite material 0210 nano-technology |
| Zdroj: | Journal of the European Ceramic Society. 41:1230-1235 |
| ISSN: | 0955-2219 |
| Popis: | This study reports the effects of composition and the presence of residual template particles on the electromechanical properties of random and textured CuO-doped Pb(Yb1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 ceramics. Fully textured PYN-PMN-PT ceramics were produced with [001]-oriented barium titanate (BT) particles. The strain of all textured compositions was improved by 40–82 %, and the coercive field was increased by −1 kV/cm relative to ceramic compositions. Textured 20PYN-46PMN-34PT ceramics had the best combination of properties including a high Ec of 9.8 kV/cm and a low strain hysteresis of 8.5 %. Rayleigh analysis of textured PYN-PMN-PT ceramics showed that more rhombohedral compositions have greater strain because of improved extrinsic and intrinsic contributions to the piezoelectric response. These results demonstrate that textured PYN-PMN-PT is a promising material for high power transducers, however compositions must be sufficiently on the rhombohedral side of the morphotropic phase boundary to compensate for the phase-shifting effects of residual stresses from residual BT template particles. |
| Databáze: | OpenAIRE |
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