Zhang, Haibo ; Groh, Claudia ; Zhang, Qi ; Jo, Wook ; Webber, Kyle G. ; Rödel, Jürgen (2015)
Large Strain in Relaxor/Ferroelectric Composite Lead-Free Piezoceramics.
In: Advanced Electronic Materials
doi: 10.1002/aelm.201500018
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A lead-free relaxor (RE)/ferroelectric (FE) 0–3 composite was developed with a large strain that resulted from the electric-field-induced ergodic relaxor-to-ferroelectric phase transition at a relatively low operational field of 4 kV mm−1. The composite comprised of 70 vol% 0.91Bi1/2Na1/2TiO3–0.06BaTiO3–0.03AgNbO3 RE matrix and 30 vol% 0.93Bi1/2Na1/2TiO3–0.07BaTiO3 FE seed shows a normalized strain, , of 824 pm V−1 at room temperature. In order to explore the underlying mechanism of this composite effect, two multilayer ceramics with alternating RE and FE layers are also prepared, one with the layers parallel (polarization-coupled multilayer) and the other with the layers perpendicular (strain-coupled multilayer) to the electroded surfaces. It is found that in addition to polarization coupling, the strain coupling effect also plays a critical role in the reduction of the RE–FE phase transition field. The switching dynamics is highlighted with time-dependent piezoforce microscopy in the vicinity of the FE/RE interface.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Zhang, Haibo ; Groh, Claudia ; Zhang, Qi ; Jo, Wook ; Webber, Kyle G. ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Large Strain in Relaxor/Ferroelectric Composite Lead-Free Piezoceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 2015 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Electronic Materials |
| DOI: | 10.1002/aelm.201500018 |
| Kurzbeschreibung (Abstract): | A lead-free relaxor (RE)/ferroelectric (FE) 0–3 composite was developed with a large strain that resulted from the electric-field-induced ergodic relaxor-to-ferroelectric phase transition at a relatively low operational field of 4 kV mm−1. The composite comprised of 70 vol% 0.91Bi1/2Na1/2TiO3–0.06BaTiO3–0.03AgNbO3 RE matrix and 30 vol% 0.93Bi1/2Na1/2TiO3–0.07BaTiO3 FE seed shows a normalized strain, , of 824 pm V−1 at room temperature. In order to explore the underlying mechanism of this composite effect, two multilayer ceramics with alternating RE and FE layers are also prepared, one with the layers parallel (polarization-coupled multilayer) and the other with the layers perpendicular (strain-coupled multilayer) to the electroded surfaces. It is found that in addition to polarization coupling, the strain coupling effect also plays a critical role in the reduction of the RE–FE phase transition field. The switching dynamics is highlighted with time-dependent piezoforce microscopy in the vicinity of the FE/RE interface. |
| Freie Schlagworte: | electric-field-induced phase transition; normalized strain; polarization coupling; relaxor-ferroelectric ceramic composites; strain coupling |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Elektromechanik von Oxiden 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft |
| Hinterlegungsdatum: | 24 Apr 2015 08:08 |
| Letzte Änderung: | 24 Apr 2015 08:08 |
| PPN: | |
| Sponsoren: | H.Z. thanks the Alexander-von-Humboldt foundation for generous funding and also the generous support by the National Natural Science Foundation of China under Grant No. 51202074., C.G. acknowledges fi nancial support from the Hesse state centre AdRIA on adaptronics., K.G.W. gratefully acknowledges fi nancial support from the Deutsche Forschungsgemeinschaft under WE Grant No. 4972/2–1. |
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