Rojas, Virginia ; Koruza, Jurij ; Patterson, Eric A. ; Acosta, Matias ; Jiang, Xijie ; Dietz, Christian ; Rödel, Jürgen (2017)
Influence of composition on the unipolar electric fatigue of
Ba(Zr0.2Ti0.8)O3-(Ba0.7Ca0.3)TiO3 lead-free piezoceramics.
In: Journal of the American Ceramic Society, 100 (10)
doi: 10.1111/jace.15013
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The lead-free (1−x)Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3 system is considered as promising candidate for the replacement of lead-based piezoceramics in actuation applications, during which electric fatigue is a major concern. This issue was addressed in this work, where the unipolar fatigue resistance of three (1−x)Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3 compositions with different crystallographic structures (rhombohedral, orthorhombic, and tetragonal) was evaluated. Strain asymmetry and development of an internal bias field were observed in all compositions. The decrease in the remanent polarization and the large signal piezoelectric coefficient after 107 unipolar cycles was found to lie between 6%-12% and 2%-13%, respectively. The most pronounced fatigue was observed for the orthorhombic composition, which has the largest extrinsic contribution to strain. On the other hand, the best fatigue resistance was observed for the tetragonal composition, which has a predominantly intrinsic strain response. The correlation of fatigue resistance with strain mechanism was corroborated with determination of the Rayleigh parameters and changes in the domain morphology after cycling as confirmed by piezoresponse force microscopy.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Rojas, Virginia ; Koruza, Jurij ; Patterson, Eric A. ; Acosta, Matias ; Jiang, Xijie ; Dietz, Christian ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Influence of composition on the unipolar electric fatigue of Ba(Zr0.2Ti0.8)O3-(Ba0.7Ca0.3)TiO3 lead-free piezoceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 21 Juni 2017 |
| Verlag: | wileyonlinelibrary |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 100 |
| (Heft-)Nummer: | 10 |
| DOI: | 10.1111/jace.15013 |
| Kurzbeschreibung (Abstract): | The lead-free (1−x)Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3 system is considered as promising candidate for the replacement of lead-based piezoceramics in actuation applications, during which electric fatigue is a major concern. This issue was addressed in this work, where the unipolar fatigue resistance of three (1−x)Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3 compositions with different crystallographic structures (rhombohedral, orthorhombic, and tetragonal) was evaluated. Strain asymmetry and development of an internal bias field were observed in all compositions. The decrease in the remanent polarization and the large signal piezoelectric coefficient after 107 unipolar cycles was found to lie between 6%-12% and 2%-13%, respectively. The most pronounced fatigue was observed for the orthorhombic composition, which has the largest extrinsic contribution to strain. On the other hand, the best fatigue resistance was observed for the tetragonal composition, which has a predominantly intrinsic strain response. The correlation of fatigue resistance with strain mechanism was corroborated with determination of the Rayleigh parameters and changes in the domain morphology after cycling as confirmed by piezoresponse force microscopy. |
| Freie Schlagworte: | cyclic fatigue, domains, fatigue, lead-free ceramics, piezoelectric materials/properties |
| 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 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physics of Surfaces |
| Hinterlegungsdatum: | 27 Jun 2017 13:36 |
| Letzte Änderung: | 01 Sep 2020 07:33 |
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