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
Article, Bibliographie
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2017 |
| Creators: | Rojas, Virginia ; Koruza, Jurij ; Patterson, Eric A. ; Acosta, Matias ; Jiang, Xijie ; Dietz, Christian ; Rödel, Jürgen |
| Type of entry: | Bibliographie |
| Title: | Influence of composition on the unipolar electric fatigue of Ba(Zr0.2Ti0.8)O3-(Ba0.7Ca0.3)TiO3 lead-free piezoceramics |
| Language: | English |
| Date: | 21 June 2017 |
| Publisher: | wileyonlinelibrary |
| Journal or Publication Title: | Journal of the American Ceramic Society |
| Volume of the journal: | 100 |
| Issue Number: | 10 |
| DOI: | 10.1111/jace.15013 |
| 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. |
| Uncontrolled Keywords: | cyclic fatigue, domains, fatigue, lead-free ceramics, piezoelectric materials/properties |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials 11 Department of Materials and Earth Sciences > Material Science > Physics of Surfaces |
| Date Deposited: | 27 Jun 2017 13:36 |
| Last Modified: | 01 Sep 2020 07:33 |
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