Seggern, Heinz von ; Leal Ferreira, Guilherme F. (2003)
Switching dynamics in poly(vinylidene fluoride) and copolymers.
In: Applied Physics Letters, 83 (16)
doi: 10.1063/1.1616973
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Theoretical aspects of the field dependent switching dynamics of poly(vinylidene fluoride) and its copolymers have been investigated based on the experimental data of Furukawa [T. Furukawa, Phase Transitions 18, 143 (1989)]. Starting from published theories of the polarization built up for different field strengths and its comparison to experimental results, some characteristic features are observable which are not explainable by present theories. Therefore a model is proposed which includes the electrical properties induced by the two-phase system of poly(vinylidene fluoride) that consists of a ferroelectric and a nonferroelectric phase and a depolarization factor that takes into account the shape of dipolar regimes. In addition, material homogeneities have to be incorporated by means of hysteresis in order to describe the observed reduction of total polarization for small applied electric field strength.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2003 |
| Autor(en): | Seggern, Heinz von ; Leal Ferreira, Guilherme F. |
| Art des Eintrags: | Bibliographie |
| Titel: | Switching dynamics in poly(vinylidene fluoride) and copolymers |
| Sprache: | Englisch |
| Publikationsjahr: | 20 Oktober 2003 |
| Verlag: | American Institute of Physics Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 83 |
| (Heft-)Nummer: | 16 |
| DOI: | 10.1063/1.1616973 |
| Kurzbeschreibung (Abstract): | Theoretical aspects of the field dependent switching dynamics of poly(vinylidene fluoride) and its copolymers have been investigated based on the experimental data of Furukawa [T. Furukawa, Phase Transitions 18, 143 (1989)]. Starting from published theories of the polarization built up for different field strengths and its comparison to experimental results, some characteristic features are observable which are not explainable by present theories. Therefore a model is proposed which includes the electrical properties induced by the two-phase system of poly(vinylidene fluoride) that consists of a ferroelectric and a nonferroelectric phase and a depolarization factor that takes into account the shape of dipolar regimes. In addition, material homogeneities have to be incorporated by means of hysteresis in order to describe the observed reduction of total polarization for small applied electric field strength. |
| Freie Schlagworte: | ferroelectric materials, organic compounds, polymers, polymer blends, ferroelectric switching, dielectric polarisation |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Elektronische Materialeigenschaften |
| Hinterlegungsdatum: | 19 Jun 2013 09:06 |
| Letzte Änderung: | 13 Aug 2021 14:08 |
| PPN: | |
| Sponsoren: | One of the authors (H.vS.) is grateful to the Fundacao de Amparo á Pesquisa do Estado de Sao Paulo (FAPESP), and the Deutsche Akademische Austauschdienst (DAAD) for financial support of his research visit to Department of Physics and National Science (DFCM), Sao Carlos Institute of Physics, University of Sao Paulo. |
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