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, 2022, 34 (38)
doi: 10.26083/tuprints-00022892
Artikel, Zweitveröffentlichung, Verlagsversion
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, piezoelectric 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: | Zweitveröffentlichung |
| Titel: | Coherent Precipitates with Strong Domain Wall Pinning in Alkaline Niobate Ferroelectrics |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2022 |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Materials |
| Jahrgang/Volume einer Zeitschrift: | 34 |
| (Heft-)Nummer: | 38 |
| Kollation: | 12 Seiten |
| DOI: | 10.26083/tuprints-00022892 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/22892 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| 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, piezoelectric 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. |
| Freie Schlagworte: | electromechanical hardening, high‐power properties, mechanical quality factor, niobates, precipitation |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-228921 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
| 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: | 23 Dez 2022 13:47 |
| Letzte Änderung: | 28 Dez 2022 07:15 |
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