Extrinsic contribution and instability properties in lead-based and lead-free piezoceramics
Piezoceramic materials generally exhibit a notable instability of their functional properties when they work under real external conditions. This undesirable effect, known as nonlinear behavior, is mostly associated with the extrinsic contribution to material response. In this article, the role of t...
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/83058 |
| Acceso en línea: | https://hdl.handle.net/2117/83058 https://dx.doi.org/10.3390/ma8115426 |
| Access Level: | acceso abierto |
| Palabra clave: | Piezolectricity Materials -- Electric properties Electronic ceramics Piezoelectric materials Nonlinear properties Extrinsic contribution Dielectric properties Piezoelectric properties Piezoelectricitat Materials -- Propietats elèctriques Ceràmiques electròniques Àrees temàtiques de la UPC::Enginyeria dels materials |
| Sumario: | Piezoceramic materials generally exhibit a notable instability of their functional properties when they work under real external conditions. This undesirable effect, known as nonlinear behavior, is mostly associated with the extrinsic contribution to material response. In this article, the role of the ferroelectric domain walls' motion in the nonlinear response in the most workable lead-based and lead-free piezoceramics is reviewed. Initially, the extrinsic origin of the nonlinear response is discussed in terms of the temperature dependence of material response. The influence of the crystallographic phase and of the phase boundaries on the material response are then reviewed. Subsequently, the impact of the defects created by doping in order to control the extrinsic contribution is discussed as a way of tuning material properties. Finally, some aspects related to the grain-size effect on the nonlinear response of piezoceramics are surveyed. |
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