Kungl, Hans ; Fett, Theo ; Wagner, Susanne ; Hoffmann, Michael J. (2007)
Nonlinearity of strain and strain hysteresis in morphotropic LaSr-doped lead zirconate titanate under unipolar cycling with high electric fields.
In: Journal of Applied Physics, 101 (4)
doi: 10.1063/1.2434836
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The strain behavior of morphotropic, 1La2Sr-doped lead zirconate titanate was investigated. Particular attention was paid to the electric field induced strain (S-E characteristic) in the high field range for morphotropic materials having different Zr/Ti ratios. Unipolar electrical cycles with maximum fields between 1 and 3 kV/mm were applied to the poled materials under load-free conditions. Strain curves were recorded and the data were evaluated with respect to field dependence of strain and strain hysteresis. Nonlinearity of strain was detected for all materials. Depending on the composition, marked differences were found with respect to the types of nonlinearity. The corresponding data on strain hysteresis indicate that the nonlinearity was due to a loss generating strain mechanism. Therefore the nonlinearity was attributed to domain switching. A phenomenological model is suggested, which is based on the assumptions of a distribution of domain switching over a field range. This field range is characterized by the activation field parameter Ea, which is specific for each composition. The model is capable of explaining the types of nonlinearity in strain that have been observed.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2007 |
| Autor(en): | Kungl, Hans ; Fett, Theo ; Wagner, Susanne ; Hoffmann, Michael J. |
| Art des Eintrags: | Bibliographie |
| Titel: | Nonlinearity of strain and strain hysteresis in morphotropic LaSr-doped lead zirconate titanate under unipolar cycling with high electric fields |
| Sprache: | Englisch |
| Publikationsjahr: | Februar 2007 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 101 |
| (Heft-)Nummer: | 4 |
| DOI: | 10.1063/1.2434836 |
| Kurzbeschreibung (Abstract): | The strain behavior of morphotropic, 1La2Sr-doped lead zirconate titanate was investigated. Particular attention was paid to the electric field induced strain (S-E characteristic) in the high field range for morphotropic materials having different Zr/Ti ratios. Unipolar electrical cycles with maximum fields between 1 and 3 kV/mm were applied to the poled materials under load-free conditions. Strain curves were recorded and the data were evaluated with respect to field dependence of strain and strain hysteresis. Nonlinearity of strain was detected for all materials. Depending on the composition, marked differences were found with respect to the types of nonlinearity. The corresponding data on strain hysteresis indicate that the nonlinearity was due to a loss generating strain mechanism. Therefore the nonlinearity was attributed to domain switching. A phenomenological model is suggested, which is based on the assumptions of a distribution of domain switching over a field range. This field range is characterized by the activation field parameter Ea, which is specific for each composition. The model is capable of explaining the types of nonlinearity in strain that have been observed. |
| Freie Schlagworte: | lead compounds, lanthanum compounds, strontium compounds, piezoelectric materials, ferroelectric switching, electric domains, dielectric losses, dielectric hysteresis, high field effects |
| Zusätzliche Informationen: | SFB 595 A2 |
| Fachbereich(e)/-gebiet(e): | 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 > A - Synthese DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) |
| Hinterlegungsdatum: | 27 Jul 2011 12:34 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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