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Solution cast and spin coating techniques were performed to deposit ferroelectric films of PVDF-PZT on Al 3+-ZnO/polyethylene terephthalate(PET) flexible substrates. The composites with 10wt% PZT in PVDF exhibited higher dielectric permittivity and showed better ferroelectric property, might be due to internal field generated by the nano PZT particles, which favours the orientation of PVDF molecules. Higher remanent polarization and low leakage current were successfully demonstrated by coating PVDF layer on PVDF-PZT composite film. The surface of the obtained PVDF films were smooth with less porosity above PVDF-PZT composite film, enabling a significant decrease in the leakage current of composite thin films.
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Suresh et al. (2009) studied this question.
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