Kungl, Hans ; Hoffmann, Michael J. (2010)
Effects of sintering temperature on microstructure and high field strain of niobium-strontium doped morphotropic lead zirconate titanate.
In: Journal of Applied Physics, 107 (5)
doi: 10.1063/1.3294648
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Electric field induced strain is one of the most important performance parameters for multilayer ferroelectric actuators. In these devices, donor doped morphotropic lead zirconate titanate (PZT) ceramics are the materials currently used. Strain and, more general, electromechanical properties of these piezoceramics are grain size dependent. Any attempts to decrease the sintering temperature will suffer from the drawback, that changing Ts will also change the grain size and therefore the electromechanical properties. A series of NbSr-doped PZT materials with 11 different Zr/Ti ratios over the whole range of the morphotropic phase boundary has been prepared, and sintered at temperatures between 975 and 1100 °C. Grain size and x-ray diffraction patterns were evaluated and the strain behavior was measured and analyzed. Qualitative similar effects of grain size on strain behavior were found for all morphotropic PZT 1Nb2Sr compositions: When lowering the sintering temperature, field induced strain decreases whereas the remanent strain increases. Quantitative differences between the materials indicate that, in addition to the influence from the grain size, there are effects specific for the compositions, which are most probably related to changes in phase composition. From the inverse behavior of remanent strain and field induced strain versus grain size, on a macroscopic level, a description of the mechanisms which govern the effects of grain size on strain is derived.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Kungl, Hans ; Hoffmann, Michael J. |
| Art des Eintrags: | Bibliographie |
| Titel: | Effects of sintering temperature on microstructure and high field strain of niobium-strontium doped morphotropic lead zirconate titanate |
| Sprache: | Englisch |
| Publikationsjahr: | März 2010 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 107 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1063/1.3294648 |
| Kurzbeschreibung (Abstract): | Electric field induced strain is one of the most important performance parameters for multilayer ferroelectric actuators. In these devices, donor doped morphotropic lead zirconate titanate (PZT) ceramics are the materials currently used. Strain and, more general, electromechanical properties of these piezoceramics are grain size dependent. Any attempts to decrease the sintering temperature will suffer from the drawback, that changing Ts will also change the grain size and therefore the electromechanical properties. A series of NbSr-doped PZT materials with 11 different Zr/Ti ratios over the whole range of the morphotropic phase boundary has been prepared, and sintered at temperatures between 975 and 1100 °C. Grain size and x-ray diffraction patterns were evaluated and the strain behavior was measured and analyzed. Qualitative similar effects of grain size on strain behavior were found for all morphotropic PZT 1Nb2Sr compositions: When lowering the sintering temperature, field induced strain decreases whereas the remanent strain increases. Quantitative differences between the materials indicate that, in addition to the influence from the grain size, there are effects specific for the compositions, which are most probably related to changes in phase composition. From the inverse behavior of remanent strain and field induced strain versus grain size, on a macroscopic level, a description of the mechanisms which govern the effects of grain size on strain is derived. |
| Freie Schlagworte: | ceramics, grain size, lead compounds, niobium, sintering, strontium, X-ray diffraction |
| 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: | 20 Jul 2011 08:07 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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