Abstract
(1-x)PVDF-xBaTiO3 ceramic-polymer composites with x = 0.10, 0.20, 0.30 were prepared using melt growth technique. The crystal symmetry, space group and unit cell dimensions were determined from the XRD data of BaTiO3 using FullProf software, whereas crystallite size and lattice strain were estimated through Williamson-Hall approach. The distribution of BaTiO3 particles in the PVDF matrix were examined using a scanning electron microscope. The correlated barrier hopping model has been applied to the ac conductivity data in order to ascertain the conduction mechanism of charge transport in BaTiO3/PVDF composites. Also, the ac conductivity data have been used to estimate the apparent activation energy, density of states at Fermi level and minimum hopping length. Filler concentration dependent ac conductivity, density of states at Fermi level and minimum hopping length data followed definite trends of exponential growth/decay types of variation.
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