Structural, dielectric, electrocaloric and energy storage properties of lead free Ba0.975La0.017(ZrxTi0.95-x)Sn0.05O3 (x = 0.05; 0.20) ceramics
| Autor: | Nouar Bensemma, Manal Benyoussef, Abdelilah Lahmar, Sihem Smail, Bouchaib Manoun, K. Taïbi, Mimoun El Marssi |
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| Přispěvatelé: | Laboratoire de Physique de la Matière Condensée - UR UPJV 2081 (LPMC), Université de Picardie Jules Verne (UPJV), Université Hassan 1er [Settat], Mohammed VI Polytechnic University [Marocco] (UM6P) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Phase transition
Materials science Analytical chemistry chemistry.chemical_element 02 engineering and technology Dielectric 010402 general chemistry 01 natural sciences 7. Clean energy Tetragonal crystal system symbols.namesake Lanthanum [CHIM]Chemical Sciences General Materials Science Ceramic Porosity 021001 nanoscience & nanotechnology Condensed Matter Physics Grain size 0104 chemical sciences chemistry visual_art symbols visual_art.visual_art_medium 0210 nano-technology Raman spectroscopy |
| Zdroj: | Materials Chemistry and Physics Materials Chemistry and Physics, Elsevier, 2020, 252, pp.123462-. ⟨10.1016/j.matchemphys.2020.123462⟩ |
| ISSN: | 0254-0584 |
| DOI: | 10.1016/j.matchemphys.2020.123462⟩ |
| Popis: | A-site deficient Ba0.975La0.0170.008(ZrxTi0.95-x)Sn0.05O3 (x = 0.05; 0.20) ceramics (BLaZ100xTS) were synthesized using the solid-state reaction. The microstructural study revealed a high density and low porosity in the studied ceramics. Besides, a grain size lower than 1.5 μm was observed in the studied compounds, which is due to the incorporation of the rare earth element (lanthanum). X-ray diffraction and Raman studies revealed that BLaZ5TS and BLaZ20TS crystallize in a perovskite-type structure with tetragonal and cubic symmetries, respectively. The dielectric study showed a normal ferroelectric-paraelectric phase transition for BLaZ5TS while a diffuse phase transition is noticed for BLaZ20TS sample. The energy-storage density and the associated energy efficiency were determined from the P-E loops versus temperature and the calculated values are comparable with the results obtained on BCZT systems. Furthermore, the adiabatic temperature change ΔT was calculated through the indirect method and a relatively high value of ΔT/ΔE = 0.2 10−6 K m/V is obtained in BLaZ5TS compound. The simultaneous presence of energy storage property and electrocaloric responsivity makes this system a promising environmentally friendly candidate for application in electronic devices. |
| Databáze: | OpenAIRE |
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