Li, Junjie ; Yin, Ruowei ; Hou, Yuxuan ; Su, Xiaopo ; Zhuo, Fangping ; Li, Jianting ; Zhang, Xing ; Wu, Wenjuan ; Li, Lezhong ; Bai, Yang (2023)
Effect of memory behavior on electric-field-induced phase transition and electrocaloric response in antiferroelectric ceramics.
In: Applied Physics Letters, 122 (25)
doi: 10.1063/5.0155071
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Field-induced phase transition in antiferroelectric (AFE) materials always facilitates giant positive/negative electrocaloric (EC) responses for a promising cooling application, while it is not only associated with external field conditions but also applied field history, i.e., memory behavior. Herein, we demonstrate that memory behavior increases the likelihood of observing an EC response when the operating field is parallel to the pre-poling field, as compared to the antiparallel condition. Additionally, when the temperature is slightly above the AFE-ferroelectric (FE) phase transition temperature, the field-off process induces a two-step microstructure change, characterized by a rapid domain rotation followed by a slow phase transition, which finally produces an abnormal EC heat flow signal. Through a Landau theory analysis, this kinetic behavior is contributed to the competition between the ferroelectric (FE) order pinned by memory behavior and the thermal agitation favored AFE state. This work deepens the understanding of the phase transition in the ferroelectric system.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Li, Junjie ; Yin, Ruowei ; Hou, Yuxuan ; Su, Xiaopo ; Zhuo, Fangping ; Li, Jianting ; Zhang, Xing ; Wu, Wenjuan ; Li, Lezhong ; Bai, Yang |
| Art des Eintrags: | Bibliographie |
| Titel: | Effect of memory behavior on electric-field-induced phase transition and electrocaloric response in antiferroelectric ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 20 Juni 2023 |
| Verlag: | AIP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 122 |
| (Heft-)Nummer: | 25 |
| DOI: | 10.1063/5.0155071 |
| Kurzbeschreibung (Abstract): | Field-induced phase transition in antiferroelectric (AFE) materials always facilitates giant positive/negative electrocaloric (EC) responses for a promising cooling application, while it is not only associated with external field conditions but also applied field history, i.e., memory behavior. Herein, we demonstrate that memory behavior increases the likelihood of observing an EC response when the operating field is parallel to the pre-poling field, as compared to the antiparallel condition. Additionally, when the temperature is slightly above the AFE-ferroelectric (FE) phase transition temperature, the field-off process induces a two-step microstructure change, characterized by a rapid domain rotation followed by a slow phase transition, which finally produces an abnormal EC heat flow signal. Through a Landau theory analysis, this kinetic behavior is contributed to the competition between the ferroelectric (FE) order pinned by memory behavior and the thermal agitation favored AFE state. This work deepens the understanding of the phase transition in the ferroelectric system. |
| Zusätzliche Informationen: | Artikel-ID: 252902 |
| 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: | 21 Jun 2023 05:22 |
| Letzte Änderung: | 21 Jun 2023 08:36 |
| PPN: | 508947278 |
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