Studies on Dielectric and Ferroelectric Properties of CoFe2O4 + BNT Composites

Abstract

Now a days the materials which are showing both ferroelectric and ferromagnetic properties
are interesting. In this work, we have prepared cobalt ferrite and bismuth sodium titanate
composites by conventional ceramic method. With X-ray Diffraction the phase is confirmed
with no other impurity peaks. By the help of SEM the surface morphology of composite is
characterisation. From ferroelectric study, it is observed that the coercivity decreasing and
remnant polarisation, saturation polarisation are increasing with BNT weigtht fraction.
Variation of dielectric constant with respect to the frequency has been studied. It is observed
that dielectric constant is decreasing with frequency and increasing with increasing weight
fraction of BNT.