Zhao, Changhao ; Gao, Shuang ; Kleebe, Hans-Joachim ; Tan, Xiaoli ; Koruza, Jurij ; Rödel, Jürgen (2022)
Coherent Precipitates with Strong Domain Wall Pinning in Alkaline Niobate Ferroelectrics.
In: Advanced Materials
doi: 10.1002/adma.202202379
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
High-power piezoelectric applications are predicted to share approximately one-third of the lead-free piezoelectric ceramic market in 2024 with alkaline niobates as the primary competitor. To suppress self-heating in high-power devices due to mechanical loss when driven by large electric fields, piezo-electric hardening to restrict domain wall motion is required. In the present work, highly effective piezoelectric hardening via coherent plate-like precipitates in a model system of the (Li,Na)NbO3 (LNN) solid solution delivers a reduction in losses, quantified as an electromechanical quality factor, by a factor of ten. Various thermal aging schemes are demonstrated to control the average size, number density, and location of the precipitates. The established properties are correlated with a detailed determination of short- and long-range atomic structure by X-ray diffraction and pair distribution function analysis, respectively, as well as microstructure determined by transmission electron microscopy. The impact of microstructure with precipitates on both small- and large-field properties is also established. These results pave the way to implement precipitate hardening in piezoelectric materials, analogous to precipitate hardening in metals, broadening their use cases in applications.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Zhao, Changhao ; Gao, Shuang ; Kleebe, Hans-Joachim ; Tan, Xiaoli ; Koruza, Jurij ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Coherent Precipitates with Strong Domain Wall Pinning in Alkaline Niobate Ferroelectrics |
| Sprache: | Englisch |
| Publikationsjahr: | 29 August 2022 |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Materials |
| DOI: | 10.1002/adma.202202379 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | High-power piezoelectric applications are predicted to share approximately one-third of the lead-free piezoelectric ceramic market in 2024 with alkaline niobates as the primary competitor. To suppress self-heating in high-power devices due to mechanical loss when driven by large electric fields, piezo-electric hardening to restrict domain wall motion is required. In the present work, highly effective piezoelectric hardening via coherent plate-like precipitates in a model system of the (Li,Na)NbO3 (LNN) solid solution delivers a reduction in losses, quantified as an electromechanical quality factor, by a factor of ten. Various thermal aging schemes are demonstrated to control the average size, number density, and location of the precipitates. The established properties are correlated with a detailed determination of short- and long-range atomic structure by X-ray diffraction and pair distribution function analysis, respectively, as well as microstructure determined by transmission electron microscopy. The impact of microstructure with precipitates on both small- and large-field properties is also established. These results pave the way to implement precipitate hardening in piezoelectric materials, analogous to precipitate hardening in metals, broadening their use cases in applications. |
| Zusätzliche Informationen: | Artikel-ID: 2202379 |
| 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: | 30 Aug 2022 05:13 |
| Letzte Änderung: | 03 Jul 2024 02:58 |
| PPN: | 49871988X |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Coherent Precipitates with Strong Domain Wall Pinning in Alkaline Niobate Ferroelectrics. (deposited 23 Dez 2022 13:47)
- Coherent Precipitates with Strong Domain Wall Pinning in Alkaline Niobate Ferroelectrics. (deposited 30 Aug 2022 05:13) [Gegenwärtig angezeigt]
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