Anomalous Apparent Conductivity of PVDF and PT:P(VDF-TrFE) Composites

Anomalous decrease of the apparent conductivity has been observed during sandwich electrode and corona poling of PVDF and PT:P(VDF-TrFE) representing heterogeneous ferroelectric polymers and polymer/ceramic composites. It has been shown that the phenomenon accompanies the build-up of the ferroelectr...

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Bibliographic Details
Published in:Ferroelectrics 2003-01, Vol.294 (1), p.93-103
Main Authors: Fedosov, S. N., Sergeeva, A. E., Marat-Mendes, J. N.
Format: Article
Language:English
Subjects:
Composite materials
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectric, piezoelectric, ferroelectric and antiferroelectric materials
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Exact sciences and technology
P(VDF-TrFE)
Physics
polymer/ceramics composites
Polymers
organic compounds
PVDF
sol-gel
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Summary:Anomalous decrease of the apparent conductivity has been observed during sandwich electrode and corona poling of PVDF and PT:P(VDF-TrFE) representing heterogeneous ferroelectric polymers and polymer/ceramic composites. It has been shown that the phenomenon accompanies the build-up of the ferroelectric polarization in the materials and explained by a massive trapping of charge carriers at boundaries of the ferroelectric species and at the transition zones where a gradient of polarization exists. The trapped charge contributes to stability of the ferroelectric polarization, since it compensates the depolarizing field.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150190390238676