Daniel, L. ; Hall, D. A. ; Webber, Kyle G. ; King, A. ; Withers, P. J. (2014)
Identification of crystalline elastic anisotropy in PZT ceramics from in-situ blocking stress measurements.
In: Journal of Applied Physics, 115 (17)
doi: 10.1063/1.4874222
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
High energy x-ray diffraction measurements of lattice strains were performed on a rhombohedral Lead Zirconate Titanate ceramic (PZT 55-45) under combinations of applied electric field and compressive stress. These measurements allow the construction of blocking stress curves for different sets of crystallographic orientations which reflect the single crystal elastic anisotropy. A micro-mechanical interpretation of the results is then proposed. Assuming cubic symmetry for the crystalline elastic stiffness tensor and isotropy for the macroscopic elastic properties, the elastic properties of the single crystal are extracted from the measured data. An anisotropy ratio close to 0.3 is found (compared to 1 for isotropic materials). The high level of anisotropy found in this work suggests that crystalline elastic anisotropy should not be neglected in the modelling of ferroelectric materials.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Daniel, L. ; Hall, D. A. ; Webber, Kyle G. ; King, A. ; Withers, P. J. |
| Art des Eintrags: | Bibliographie |
| Titel: | Identification of crystalline elastic anisotropy in PZT ceramics from in-situ blocking stress measurements |
| Sprache: | Englisch |
| Publikationsjahr: | 7 Mai 2014 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 115 |
| (Heft-)Nummer: | 17 |
| DOI: | 10.1063/1.4874222 |
| Kurzbeschreibung (Abstract): | High energy x-ray diffraction measurements of lattice strains were performed on a rhombohedral Lead Zirconate Titanate ceramic (PZT 55-45) under combinations of applied electric field and compressive stress. These measurements allow the construction of blocking stress curves for different sets of crystallographic orientations which reflect the single crystal elastic anisotropy. A micro-mechanical interpretation of the results is then proposed. Assuming cubic symmetry for the crystalline elastic stiffness tensor and isotropy for the macroscopic elastic properties, the elastic properties of the single crystal are extracted from the measured data. An anisotropy ratio close to 0.3 is found (compared to 1 for isotropic materials). The high level of anisotropy found in this work suggests that crystalline elastic anisotropy should not be neglected in the modelling of ferroelectric materials. |
| Freie Schlagworte: | Piezoelectric fields; Elasticity; Anisotropy; Single crystals; X-ray diffraction |
| Zusätzliche Informationen: | SFB 595 D6 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Elektromechanik von Oxiden 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > D - Bauteileigenschaften > Teilprojekt D6: Der Einfluss von Feld-Induzierten Phasenumwandlungen an der Blockierkraft in Blei-freien Ferroelektrika 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > D - Bauteileigenschaften DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung 11 Fachbereich Material- und Geowissenschaften Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) |
| Hinterlegungsdatum: | 12 Mai 2014 13:42 |
| Letzte Änderung: | 12 Mai 2014 13:42 |
| PPN: | |
| Sponsoren: | The authors are grateful for support provided by the ESRF under Grant No. MA-1727, “Ferroelectric-ferroelastic domain switching and the blocking stress in piezoelectric ceramics.” , This work was supported at the University of Manchester by the Engineering and Physical Sciences Research Council (EPSRC) under the Grant No. EP/J010685/1., L.D. gratefully acknowledges sabbatical leave support granted by Univ Paris-Sud. The authors also gratefully acknowledge Andreja Benčan and Barbara Malič for processing the PZT ceramics. , K.G.WK.G.W. would also like to acknowledge the Deutsche Forschungsgemeinschaft (DFG) under SFB 595/D6. . would also like to acknowledge the Deutsche Forschungsgemeinschaft (DFG) under SFB 595/D6. |
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