Simons, Hugh ; Glaum, Julia ; Daniels, John E. ; Studer, Andrew J. ; Liess, Andreas ; Rödel, Jürgen ; Hoffman, Mark (2012)
Domain fragmentation during cyclic fatigue in 94%(Bi1/2Na1/2)TiO3-6%BaTiO3.
In: Journal of Applied Physics, 112 (4)
doi: 10.1063/1.4745900
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The fatigue of the lead-free piezoceramic 94%(Bi1/2Na1/2)TiO3-6%BaTiO3 was investigated under bipolar electric fields. Degradation of the polarization, strain, and permittivity was measured during the fatigue process, and correlated with structural data measured at incremental points in the fatigue process using neutron diffraction. The results suggest a two-stage fatigue mechanism whereby, following a field-induced phase transformation to a poled ferroelectric state, the domain structure becomes progressively fragmented by a repetitive process of domain wall pinning and subdivision.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Simons, Hugh ; Glaum, Julia ; Daniels, John E. ; Studer, Andrew J. ; Liess, Andreas ; Rödel, Jürgen ; Hoffman, Mark |
| Art des Eintrags: | Bibliographie |
| Titel: | Domain fragmentation during cyclic fatigue in 94%(Bi1/2Na1/2)TiO3-6%BaTiO3 |
| Sprache: | Englisch |
| Publikationsjahr: | 15 August 2012 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 112 |
| (Heft-)Nummer: | 4 |
| DOI: | 10.1063/1.4745900 |
| Kurzbeschreibung (Abstract): | The fatigue of the lead-free piezoceramic 94%(Bi1/2Na1/2)TiO3-6%BaTiO3 was investigated under bipolar electric fields. Degradation of the polarization, strain, and permittivity was measured during the fatigue process, and correlated with structural data measured at incremental points in the fatigue process using neutron diffraction. The results suggest a two-stage fatigue mechanism whereby, following a field-induced phase transformation to a poled ferroelectric state, the domain structure becomes progressively fragmented by a repetitive process of domain wall pinning and subdivision. |
| Freie Schlagworte: | barium compounds, bismuth compounds, crystal structure, dielectric hysteresis, dielectric polarisation, electric domain walls, fatigue, ferroelectric ceramics, ferroelectric transitions, neutron diffraction, permittivity, piezoceramics, piezoelectricity, sodium compounds |
| 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: | 22 Jan 2013 14:40 |
| Letzte Änderung: | 05 Mär 2013 10:04 |
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