Zhao, Changhao ; Gao, Shuang ; Yang, Tiannan ; Scherer, Michael ; Schultheiß, Jan ; Meier, Dennis ; Tan, Xiaoli ; Kleebe, Hans-Joachim ; Chen, Long-Qing ; Koruza, Jurij ; Rödel, Jürgen (2021)
Precipitation Hardening in Ferroelectric Ceramics.
In: Advanced Materials, 33 (36)
doi: 10.1002/adma.202102421
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
Domain wall motion in ferroics, similar to dislocation motion in metals, can be tuned by well-concepted microstructural elements. In demanding high-power applications of piezoelectric materials, the domain wall motion is considered as a lossy hysteretic mechanism that should be restricted. Current applications for so-called hard piezoelectrics are abundant and hinge on the use of an acceptordoping scheme. However, this mechanism features severe limitations due to enhanced mobility of oxygen vacancies at moderate temperatures. By analogy with metal technology, the authors present here a new solution for electroceramics, where precipitates are utilized to pin domain walls and improve piezoelectric properties. Through a sequence of sintering, nucleation, and precipitate growth, intragranular precipitates leading to a fine domain structure are developed as shown by transmission electron microscopy, piezoresponse force microscopy, and phase-field simulation. This structure impedes the domain wall motion as elucidated by electromechanical characterization. As a result, the mechanical quality factor is increased by ≈50% and the hysteresis in electrostrain is suppressed considerably. This is even achieved with slightly increased piezoelectric coefficient and electromechanical coupling factor. This novel process can be smoothly implemented in industrial production processes and is accessible to simple laboratory experimentation for microstructure optimization and implementation in various ferroelectric systems.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Zhao, Changhao ; Gao, Shuang ; Yang, Tiannan ; Scherer, Michael ; Schultheiß, Jan ; Meier, Dennis ; Tan, Xiaoli ; Kleebe, Hans-Joachim ; Chen, Long-Qing ; Koruza, Jurij ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Precipitation Hardening in Ferroelectric Ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 27 Juli 2021 |
| Ort: | Weinheim |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Materials |
| Jahrgang/Volume einer Zeitschrift: | 33 |
| (Heft-)Nummer: | 36 |
| Kollation: | 10 Seiten |
| DOI: | 10.1002/adma.202102421 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Domain wall motion in ferroics, similar to dislocation motion in metals, can be tuned by well-concepted microstructural elements. In demanding high-power applications of piezoelectric materials, the domain wall motion is considered as a lossy hysteretic mechanism that should be restricted. Current applications for so-called hard piezoelectrics are abundant and hinge on the use of an acceptordoping scheme. However, this mechanism features severe limitations due to enhanced mobility of oxygen vacancies at moderate temperatures. By analogy with metal technology, the authors present here a new solution for electroceramics, where precipitates are utilized to pin domain walls and improve piezoelectric properties. Through a sequence of sintering, nucleation, and precipitate growth, intragranular precipitates leading to a fine domain structure are developed as shown by transmission electron microscopy, piezoresponse force microscopy, and phase-field simulation. This structure impedes the domain wall motion as elucidated by electromechanical characterization. As a result, the mechanical quality factor is increased by ≈50% and the hysteresis in electrostrain is suppressed considerably. This is even achieved with slightly increased piezoelectric coefficient and electromechanical coupling factor. This novel process can be smoothly implemented in industrial production processes and is accessible to simple laboratory experimentation for microstructure optimization and implementation in various ferroelectric systems. |
| Zusätzliche Informationen: | Art.-Nr. 2102421 |
| 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: | 27 Jul 2021 06:34 |
| Letzte Änderung: | 19 Jul 2024 09:13 |
| PPN: | |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Precipitation Hardening in Ferroelectric Ceramics. (deposited 11 Dez 2023 13:58)
- Precipitation Hardening in Ferroelectric Ceramics. (deposited 27 Jul 2021 06:34) [Gegenwärtig angezeigt]
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