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Switching dynamics in poly(vinylidene fluoride) and copolymers

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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