Magnetoimpedance of Zn_0.5Ni_0.5Fe₂O₄ – polyvinylidene fluoride hybrid nanocomposite flexible film

Due to the increasing interest at present time in the field of wearable electronics, flexible composite films lead to immense research interest for the core researchers. In this context, we have presented the magnetoimpedance studies of 0.5 Zn_0.5Ni_0.5Fe₂O₄. -0.5 polyvinylidene fluoride nanocomposite flexible film prepared through low temperature “pyrophoric reaction process” succeeded by casting method. The magnetoimpedance characteristics of the composite flexible film have been studied employing a magnetic field dependence impedance spectroscopy technique. The value of impedance is found to decrease in nature with increasing the strength of the applied magnetic field, as a cause of high interfacial polarization at the low field strength of the granular-like composite. Moreover, with the increasing strength of the applied magnetic field, the value of impedance was also found to be decreased in nature or the increasing value of magnetoimpedance, attributing the magnetostriction property, domain alignment of the piezo-magnetic phase, and transfer of stress to the piezoelectric phase from the magnetic phase of the composites. The peak magnetoimpedance value is found to be ~ 5.3% at a frequency of 2.2 kHz, at the applied magnetic field of 1800 Oe.