Charge-field hysteresis of BaTiO3: PVDF composites
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Hysteresis phenomena in BaTiO3: PVDF composites with different weight fractions of BaTiO3 and PVDF were studied in the temperature range 20–180°C. A sinusoidal electric field of up to 100 kV μ−1 at 50 Hz was used. The saturation polarization, Psat, remanant polarization, Pr, and coercive field, Ec, were observed to increase with increasing ceramic content of the composite samples. An increase of polarization with temperature was observed for all composites up to 80°C. This has been explained on the basis of an increase in the conductivity of the PVDF phase.
KeywordsPolymer PVDF BaTiO3 Material Processing Weight Fraction
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