Webber, Kyle G. ; Aulbach, Emil ; Key, T. ; Marsilius, Mie ; Granzow, Torsten ; Rödel, Jürgen (2009)
Temperature-dependent ferroelastic switching of soft lead zirconate titanate.
In: Acta Materialia, 57 (15)
doi: 10.1016/j.actamat.2009.06.037
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The longitudinal strain and polarization of a soft polycrystalline ferroelectric ceramic (lead zirconate titanate, PZT) were measured under uniaxial compressive stress at elevated temperatures utilizing a novel testing fixture. Ferroelectric ceramics have not previously been characterized under these conditions due to experimental complexity. In addition to nonlinear macroscopic constitutive behavior, the linear elastic moduli have been measured throughout the loading cycle, allowing for the determination of the relative contributions from the linear and nonlinear ferroelastic behavior as a function of stress and temperature. Experimental results show a strong temperature dependence of ferroelastic switching. The ferroelastic properties of unpoled and poled materials for temperatures up to the Curie point are contrasted with the spontaneous strain, elucidating the role of tetragonality in ferroelastic switching. When thermal changes are considered, marked changes in the maximum strain are observed.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2009 |
| Autor(en): | Webber, Kyle G. ; Aulbach, Emil ; Key, T. ; Marsilius, Mie ; Granzow, Torsten ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Temperature-dependent ferroelastic switching of soft lead zirconate titanate |
| Sprache: | Englisch |
| Publikationsjahr: | September 2009 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Acta Materialia |
| Jahrgang/Volume einer Zeitschrift: | 57 |
| (Heft-)Nummer: | 15 |
| DOI: | 10.1016/j.actamat.2009.06.037 |
| Kurzbeschreibung (Abstract): | The longitudinal strain and polarization of a soft polycrystalline ferroelectric ceramic (lead zirconate titanate, PZT) were measured under uniaxial compressive stress at elevated temperatures utilizing a novel testing fixture. Ferroelectric ceramics have not previously been characterized under these conditions due to experimental complexity. In addition to nonlinear macroscopic constitutive behavior, the linear elastic moduli have been measured throughout the loading cycle, allowing for the determination of the relative contributions from the linear and nonlinear ferroelastic behavior as a function of stress and temperature. Experimental results show a strong temperature dependence of ferroelastic switching. The ferroelastic properties of unpoled and poled materials for temperatures up to the Curie point are contrasted with the spontaneous strain, elucidating the role of tetragonality in ferroelastic switching. When thermal changes are considered, marked changes in the maximum strain are observed. |
| Freie Schlagworte: | Ferroelasticity; Ferroelectricity; High temperature deformation; Deformation texture |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Elektromechanik von Oxiden 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe |
| Hinterlegungsdatum: | 18 Mai 2011 15:19 |
| Letzte Änderung: | 28 Feb 2014 09:09 |
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