Investigation on structural and ferroelectric properties of spray deposited Cs1-xKxNO3: PVA : composite films

The ferroelectric and fatigue properties of spray deposited K - substituted cesium nitrate: poly (vinyl alcohol) composite films have been studied. The XRD pattern confirms the presence of ferroelectric phase of CsNO
₃
in the composite films upto doping concentration of 7.5%. The elemental analysis has been studied using EDX measurements. It is observed the remanent polarization (Pr) increases linearly that with doping concentration and optimum value of P
_r
= 9.2 μC/cm
²
was found. The fatigue measurements also show improvement in K - substituted composite films. The switching time has been found to reduce four times in the K - substituted films. The C - V characteristics of the composite films show the butterfly feature and also confirm presence of ferroelectricity in the composite films.