ABSTRACT Over the past few years, a great deal of research has been dedicated to the development of eco‐friendly advanced materials, which have numerous applications in fields such as multiferroics, sensors, actuators, and transducer devices. This article presents the synthesis and characterization of the structural, dielectric, and ferroelectric properties of a PVDF‐Bi 2 WO 6 composite material over a wide range of frequencies (1 kHz–1 MHz) and temperatures (25°C—125°C). The composite was fabricated by the conventional solution casting method. XRD and FTIR studies confirm that the composite film PVDF‐0.2wt% Bi 2 WO 6 exhibits an approximate 44% β‐phase fraction, indicating that nearly half of the material exists in the electroactive β‐crystalline phase. The surface morphology of the composites was evaluated by field‐emission scanning electron microscopy (FESEM), which shows uniform grain distributions in the microstructural image, with grains of different sizes and a few voids. Energy‐dispersive X‐ray (EDX) studies show that the sample is pure (equivalent weight and atomic percentages). The dielectric composite with εᵣ = 243 and tan δ = 0.08 could be applied to high‐capacitance energy‐storage capacitors and low‐frequency power electronic devices. AC conductivity has shown frequency dependence according to Jonscher's universal power law and is controlled by the correlated barrier hopping conduction mechanism. The composites exhibit ferroelectric properties, with a remanent polarization, maximum polarization, coercivity, and maximum electric field for the composite film are 0.003, 0.0124 μC/cm 2 , 9.412, and 30.7176 kV/cm, respectively.
Hota et al. (Thu,) studied this question.