Tan, Xiaoli ; Jo, Wook ; Granzow, Torsten ; Frederick, Joshua ; Aulbach, Emil ; Rödel, Jürgen (2009)
Auxetic behavior under electrical loads in an induced ferroelectric phase.
In: Applied Physics Letters, 94 (4)
doi: 10.1063/1.3076109
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The longitudinal and transverse strains were measured as a function of applied electric fields in a bulk ceramic sample of Pb0.99Nb0.02[(Zr0.57Sn0.43)0.94Ti0.06]0.98O3 at room temperature. Instead of a transverse contraction, a transverse expansion was observed in the electric-field-induced ferroelectric phase after the antiferroelectric-to-ferroelectric phase transition. Therefore, an auxetic behavior was established in monolithic ferroelectric polycrystalline ceramics under electrical loads. The behavior is characterized by a negative strain ratio that is analogous to the Poisson’s ratio. The transverse expansion leads to a large hydrostatic piezoelectric coefficient dh, which suggests new applications of antiferroelectric ceramics in piezoelectric devices.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2009 |
| Autor(en): | Tan, Xiaoli ; Jo, Wook ; Granzow, Torsten ; Frederick, Joshua ; Aulbach, Emil ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Auxetic behavior under electrical loads in an induced ferroelectric phase |
| Sprache: | Englisch |
| Publikationsjahr: | 26 Januar 2009 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 94 |
| (Heft-)Nummer: | 4 |
| DOI: | 10.1063/1.3076109 |
| Kurzbeschreibung (Abstract): | The longitudinal and transverse strains were measured as a function of applied electric fields in a bulk ceramic sample of Pb0.99Nb0.02[(Zr0.57Sn0.43)0.94Ti0.06]0.98O3 at room temperature. Instead of a transverse contraction, a transverse expansion was observed in the electric-field-induced ferroelectric phase after the antiferroelectric-to-ferroelectric phase transition. Therefore, an auxetic behavior was established in monolithic ferroelectric polycrystalline ceramics under electrical loads. The behavior is characterized by a negative strain ratio that is analogous to the Poisson’s ratio. The transverse expansion leads to a large hydrostatic piezoelectric coefficient dh, which suggests new applications of antiferroelectric ceramics in piezoelectric devices. |
| Freie Schlagworte: | dielectric polarisation, electric domains, elongation, ferroelectric ceramics, ferroelectric transitions, lead compounds, load (electric), niobium compounds, piezoelectricity |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 14 Jun 2011 13:44 |
| Letzte Änderung: | 05 Mär 2013 09:48 |
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