Taylor, Odin ; Chaffee, Ethan ; Liu, Binzhi ; Zhao, Changhao ; Rödel, Jürgen ; Zhou, Lin ; Tan, Xiaoli (2024)
Electric field response of ferroelectric domains near non-polar precipitates in BaTiO3-based ceramics.
In: Applied Physics Letters, 124
doi: 10.1063/5.0211248
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Precipitates have recently been found to significantly enhance the mechanical quality factor in piezoelectric ceramics. Such a piezoelectric hardening effect was attributed to strong interactions between ferroelectric domains and precipitates. In the present work, the response of domains to applied electric fields is observed in situ via transmission electron microscopy in aged (Ba, Ca)TiO3 ceramics with precipitates to reveal the underlying mechanism of this phenomenon. Ferroelectric domains in the Ba-rich matrix grain are observed to be more concen- trated near non-polar Ca-rich precipitates. With increasing applied voltage, domains separate from precipitates merge together first, while those near precipitates persist to higher voltages. During ramping down, domains nucleate from precipitates. These direct observations confirm the strong interactions between ferroelectric domains and precipitates in piezoelectric ceramics.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Taylor, Odin ; Chaffee, Ethan ; Liu, Binzhi ; Zhao, Changhao ; Rödel, Jürgen ; Zhou, Lin ; Tan, Xiaoli |
| Art des Eintrags: | Bibliographie |
| Titel: | Electric field response of ferroelectric domains near non-polar precipitates in BaTiO3-based ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 4 Juni 2024 |
| Verlag: | AIP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 124 |
| DOI: | 10.1063/5.0211248 |
| Kurzbeschreibung (Abstract): | Precipitates have recently been found to significantly enhance the mechanical quality factor in piezoelectric ceramics. Such a piezoelectric hardening effect was attributed to strong interactions between ferroelectric domains and precipitates. In the present work, the response of domains to applied electric fields is observed in situ via transmission electron microscopy in aged (Ba, Ca)TiO3 ceramics with precipitates to reveal the underlying mechanism of this phenomenon. Ferroelectric domains in the Ba-rich matrix grain are observed to be more concen- trated near non-polar Ca-rich precipitates. With increasing applied voltage, domains separate from precipitates merge together first, while those near precipitates persist to higher voltages. During ramping down, domains nucleate from precipitates. These direct observations confirm the strong interactions between ferroelectric domains and precipitates in piezoelectric ceramics. |
| ID-Nummer: | Artikel-ID: 212904 |
| 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: | 05 Jun 2024 05:26 |
| Letzte Änderung: | 05 Jun 2024 11:45 |
| PPN: | 51884045X |
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