Synthesis and characterization of Bi0.5Na0.5TiO3-BaTiO3-K0.5Na0.5NbO3 ceramics for energy storage applications
| Autor: | Javier Eduardo Camargo, P. Öchsner, Miriam Susana Castro, Leandro Alfredo Ramajo, A. Prado |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Diffraction Materials science Analytical chemistry 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry Microstructure 01 natural sciences Ferroelectricity Piezoelectricity Energy storage Electronic Optical and Magnetic Materials Mechanics of Materials visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Journal of Electroceramics. 44:248-255 |
| ISSN: | 1573-8663 1385-3449 |
| Popis: | Structural, microstructural, dielectric, ferroelectric and piezoelectric properties of the (0.95-x)Bi0.5Na0.5TiO3–0.05BaTiO3-xK0.5Na0.5NbO3 (BNT-BT-KNN) lead-free ceramics with 0.0 ≤ x ≤ 0.06 were studied. Samples were synthesized through the mechanochemically activated solid-state method and structurally characterized by X-ray diffraction (XRD) and Raman-spectroscopic studies, whereas the microstructure of all samples was analyzed by Field Emission Scanning Electron Microscopy (FE-SEM). When KNN concentration and temperature were increased, the transition from a ferroelectric to relaxor state was detected by ferroelectric-loop measurements. Furthermore, the high-energy storage efficiency values at room temperature obtained for samples with x ≥ 0.04 confirm the suitability of these ceramics for energy storage applications. |
| Databáze: | OpenAIRE |
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