Magnetically influenced dielectric and electrical transport of inorganic–organic polymer-based hybrid nanocomposites

Abstract

Polymer-based hybrid nanocomposites of [Formula: see text]-([Formula: see text]) poly(vinylidene fluoride) (PVDF) ([Formula: see text], 0.6 and 0.7) have been prepared through low-cost chemical reaction process. The improvement of dielectric properties in polymer-based hybrid [Formula: see text]–PVDF nanocomposites can be utilized to make a suitable memory storage device. Surface modified [Formula: see text] (LFO) nanoparticles are well distributed inside the polymer resulting in improved dielectric constant and reduced dielectric loss. The study of complex and modulus impedance spectroscopy (IS) shows some interesting results for an influence of grain and grain boundary effects of electrical conductivity attributing the non-Debye type phenomena. The change of relaxation frequency with an applied magnetic field is ascribing the spin-dependent mechanism of electrical transport at grain boundaries (GBs). The fitting of Nyquist plot attributes the magnetic domain wall containing GB’s pinning center in the system. The higher concentration of filler LFO nanoparticles shows maximum values of dielectric constant assigning the Maxwell–Wagner–Sillars (MWS) polarization. The current study is focused towards the query to learn the complete study of magnetic field dependence electrical and dielectric properties in a system holding an excessive potential for a capable candidate for industrial applications.