Hinterstein, Manuel ; Knapp, Michael ; Hölzel, Markus ; Jo, Wook ; Cervellino, Antonio ; Ehrenberg, Helmut ; Fuess, Hartmut (2010)
Field-induced phase transition in Bi1/2Na1/2TiO3-based lead-free piezoelectric ceramics.
In: Journal of Applied Crystallography, 43 (6)
doi: 10.1107/S0021889810038264
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The origin of the electric field-induced strain in the polycrystalline ceramic 0.92Bi1/2Na1/2TiO3-0.06BaTiO3-0.02K1/2Na1/2NbO3 was investigated using in situ high-resolution X-ray and neutron diffraction techniques. The initially existing tetragonal phase with pseudocubic lattice undergoes a reversible phase transition to a significantly distorted rhombohedral phase under electric field, accompanied by a change in the oxygen octahedral tilting from a0a0c+ to a-a-a- and in the tilting angle. The polarization values for the tetragonal and rhombohedral phases were calculated based on the structural information from Rietveld refinements. The large recoverable electric field-induced strain is a consequence of a reversible electric field-induced phase transition from an almost nonpolar tetragonal phase to a ferroelectrically active rhombohedral phase.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Hinterstein, Manuel ; Knapp, Michael ; Hölzel, Markus ; Jo, Wook ; Cervellino, Antonio ; Ehrenberg, Helmut ; Fuess, Hartmut |
| Art des Eintrags: | Bibliographie |
| Titel: | Field-induced phase transition in Bi1/2Na1/2TiO3-based lead-free piezoelectric ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | Dezember 2010 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Crystallography |
| Jahrgang/Volume einer Zeitschrift: | 43 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.1107/S0021889810038264 |
| Kurzbeschreibung (Abstract): | The origin of the electric field-induced strain in the polycrystalline ceramic 0.92Bi1/2Na1/2TiO3-0.06BaTiO3-0.02K1/2Na1/2NbO3 was investigated using in situ high-resolution X-ray and neutron diffraction techniques. The initially existing tetragonal phase with pseudocubic lattice undergoes a reversible phase transition to a significantly distorted rhombohedral phase under electric field, accompanied by a change in the oxygen octahedral tilting from a0a0c+ to a-a-a- and in the tilting angle. The polarization values for the tetragonal and rhombohedral phases were calculated based on the structural information from Rietveld refinements. The large recoverable electric field-induced strain is a consequence of a reversible electric field-induced phase transition from an almost nonpolar tetragonal phase to a ferroelectrically active rhombohedral phase. |
| Freie Schlagworte: | field-induced phase transitions; piezoelectric ceramics. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 17 Jun 2011 12:26 |
| Letzte Änderung: | 05 Mär 2013 09:48 |
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