MacLaren, Ian ; Schmitt, Ljubomira A. ; Fuess, Hartmut ; Kungl, Hans ; Hoffmann, Michael J. (2005)
Experimental measurement of stress at a four-domain junction in lead zirconate titanate.
In: Journal of Applied Physics, 97 (9)
doi: 10.1063/1.1886910
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A junction between two lamellar bands of ferroelectric domains in a lead zirconate titanate ceramic is analyzed using Kikuchi diffraction patterns in the transmission electron microscope. Indexing of the diffraction patterns allowed the determination of the three-dimensional relative orientation of the four different domains at the junction and thus the characterization of the domain boundaries. The local c/a ratio could also be determined from the misorientations at the domain boundaries. Analysis of the data showed that large stresses were concentrated at the junction, and that this is inevitable at such band junctions. Such stress concentrations could act as nuclei for cracking of the ceramic under additional loading in service, perhaps particularly as a consequence of extended electromechanical cycling. Moreover, the stresses would increase with increasing c/a, making the issues all the more serious for Ti-rich compositions having larger c/a ratios.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2005 |
| Autor(en): | MacLaren, Ian ; Schmitt, Ljubomira A. ; Fuess, Hartmut ; Kungl, Hans ; Hoffmann, Michael J. |
| Art des Eintrags: | Bibliographie |
| Titel: | Experimental measurement of stress at a four-domain junction in lead zirconate titanate |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2005 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 97 |
| (Heft-)Nummer: | 9 |
| DOI: | 10.1063/1.1886910 |
| Kurzbeschreibung (Abstract): | A junction between two lamellar bands of ferroelectric domains in a lead zirconate titanate ceramic is analyzed using Kikuchi diffraction patterns in the transmission electron microscope. Indexing of the diffraction patterns allowed the determination of the three-dimensional relative orientation of the four different domains at the junction and thus the characterization of the domain boundaries. The local c/a ratio could also be determined from the misorientations at the domain boundaries. Analysis of the data showed that large stresses were concentrated at the junction, and that this is inevitable at such band junctions. Such stress concentrations could act as nuclei for cracking of the ceramic under additional loading in service, perhaps particularly as a consequence of extended electromechanical cycling. Moreover, the stresses would increase with increasing c/a, making the issues all the more serious for Ti-rich compositions having larger c/a ratios. |
| Freie Schlagworte: | lead compounds, ferroelectric ceramics, electric domains, domain boundaries, cracks, internal stresses, electron diffraction, transmission electron microscopy |
| Zusätzliche Informationen: | SFB 595 Cooperation A2, B3 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften DFG-Sonderforschungsbereiche (inkl. Transregio) DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese > Teilprojekt A2: Herstellung und Charakterisierung von PZT-Keramiken mit definierter Defektchemie DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung > Teilprojekt B3: Strukturelle Untersuchungen zur Aufklärung der elektrischen Ermüdung in PZT |
| Hinterlegungsdatum: | 27 Jul 2011 12:57 |
| Letzte Änderung: | 20 Mär 2019 09:51 |
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