Synthesis and characterization of polymer ferroelectric composite material

Abstract

Among all the research fields in material science Polymer Composites are the most rapidly growing one .Polymer Composite materials are adding a great deal of material that is more durable and useful as compared to the conventional material. Ferroelectric ceramics possess high dielectric permittivity but with poor mechanical properties and lower dielectric breakdown strength. By integrating high dielectric permittivity ceramic powder with superior dielectric strength of the polymer, one can develop a composite with high dielectric permittivity and high breakdown strength. This type of composites has high capability of energy storage and can be used in capacitors and energy storage device.
[Ba1-xY2x/3](Zr0.1Ti0.9)O3 powders with different yttrium concentrations (x=0, 0.01, 0.02, 0.03) were Prepared by solid state reaction. These powders were analyzed by X-ray diffraction (XRD). The polymer ceramic composites were prepared using polyvinyl alcohol (PVA) as polymer matrix and Ba1-xY2x/3Zr0.1Ti0.9O3 (BYZT) as ceramics powder by hot pressing technique. The microstructure/surface morphology of the composite was analyzed by scanning electron microscope. Also we have conducted an analysis of the XRD study of Polymer Composites of Poly (vinyl alcohol) with barium titanate. Hot pressed samples are studied the dielectric and impedance spectroscopy.