High stability of properties in morphotropic phase boundary Bi0.5Na0.5TiO3-BaTiO3 piezoceramics
| Autor: | Diego A. Ochoa, Lourdes Mestres, Valdeci B. dos Santos, Jose E. García, Rodrigo Machado, E. Cerdeiras |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. CEMAD - Caracterització Elèctrica de Materials i Dispositius |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Ferroelectrics
Work (thermodynamics) Phase boundary Materials science Ferroelectricity Ciencias Físicas Piezoelectricity 02 engineering and technology Dielectric Piezoelectrics materials Stability (probability) Piezoelectric ceramics Nonlinear behavior Electric field General Materials Science Composite material Ferroelectricitat Física [Àrees temàtiques de la UPC] 020502 materials Mechanical Engineering BNT-BT 021001 nanoscience & nanotechnology Condensed Matter Physics Ceràmica piezoelèctrica Astronomía Nonlinear system 0205 materials engineering Mechanics of Materials 0210 nano-technology Piezoelectric properties CIENCIAS NATURALES Y EXACTAS Piezoelectricitat |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| Popis: | The (1−x)Bi0.5Na0.5TiO3–xBaTiO3 (BNT-xBT) system with composition at its morphotropic phase boundary (MPB) has received significant attention because of their attractive properties as lead-free piezoceramics. Although the basic properties of this system are well-established, reports about the stability of the functional properties of these piezoelectric materials are still lacking. A study on the dielectric and piezoelectric properties of BNT-xBT close to their MPB, with emphasis on material response under high electric field or mechanical stress, is performed in this work. The results indicate that the BNT-BT system exhibits a high stability of dielectric and piezoelectric properties, making it potentially interesting for specific applications. A direct correlation between piezoelectric properties and nonlinear response is evidenced for a wide number of piezoceramics, which is expected due to the extrinsic nature of the piezoelectric response. Finding compositions that show high electromechanical properties and low nonlinear behavior is a challenge in the search for competitive lead-free piezoceramics. Fil: Machado, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina. Universidad Politécnica de Catalunya; España Fil: Ochoa, Diego. Universidad Politécnica de Catalunya; España Fil: dos Santos, Valdeci B.. Universidad Politécnica de Catalunya; España. Universidade Federal do Piauí; Brasil Fil: Cerdeiras, Elena. Universidad de Barcelona; España Fil: Mestres, Lourdes. Universidad de Barcelona; España Fil: García, José E.. Universidad Politécnica de Catalunya; España |
| Databáze: | OpenAIRE |
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