Wei, Qiumei ; Fulanovic, Lovro ; Kodumudi Venkataraman, Lalitha ; Zheng, Mupeng ; Hou, Yudong ; Zhu, Mankang ; Liu, Linjing ; Chang, Yunfei ; Xue, Rui (2022)
Large electrocaloric effect with ultrawide temperature span
in Na1/2Bi1/2TiO3-based lead-free ceramics.
In: Journal of the American Ceramic Society, 105 (5)
doi: 10.1111/jace.18291
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Innovative cooling technologies are recognized by many industries as a crucial part of their system design. A large electrocaloric effect (ECE) and extended working temperature are the key issues hindering the realization of electrocaloric refrigeration technology. In this work, large ECE (ΔT = 0.8–0.9◦C @ 4 kV/mm) with an ultrawide temperature span from 30 to 120◦C is noted for lead-free (Na1/2Bi1/2)0.80Sr0.20(Zn1/3Nb2/3)xTi1-xO3 ceramics. The excellent ECE performance can be ascribed to the evolution of polar nanoregions. Our work suggests that this material is promising for applications in solid-state refrigeration systems with a broad range of operating temperatures.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Wei, Qiumei ; Fulanovic, Lovro ; Kodumudi Venkataraman, Lalitha ; Zheng, Mupeng ; Hou, Yudong ; Zhu, Mankang ; Liu, Linjing ; Chang, Yunfei ; Xue, Rui |
| Art des Eintrags: | Bibliographie |
| Titel: | Large electrocaloric effect with ultrawide temperature span in Na1/2Bi1/2TiO3-based lead-free ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 2 Mai 2022 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 105 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1111/jace.18291 |
| Kurzbeschreibung (Abstract): | Innovative cooling technologies are recognized by many industries as a crucial part of their system design. A large electrocaloric effect (ECE) and extended working temperature are the key issues hindering the realization of electrocaloric refrigeration technology. In this work, large ECE (ΔT = 0.8–0.9◦C @ 4 kV/mm) with an ultrawide temperature span from 30 to 120◦C is noted for lead-free (Na1/2Bi1/2)0.80Sr0.20(Zn1/3Nb2/3)xTi1-xO3 ceramics. The excellent ECE performance can be ascribed to the evolution of polar nanoregions. Our work suggests that this material is promising for applications in solid-state refrigeration systems with a broad range of operating temperatures. |
| Freie Schlagworte: | Dielectric, electrocaloric effect, lead–free ferroelectrics, Na0.5Bi0.5TiO3, relaxor behavior |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe |
| Hinterlegungsdatum: | 11 Mär 2022 11:56 |
| Letzte Änderung: | 11 Mär 2022 11:56 |
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