Electrical and magnetic behavior of iron doped nickel titanate (Fe3+/NiTiO3) magnetic nanoparticles

• Iron doped nickel titanate magnetic nanoparticles.
• Ferromagnetic magnetism behavior with higher magnitude of coercivity.
• Dielectric behavior of ferromagnetic nanoparticles with increase of Fe content.

Iron doped nickel titanate (Fe3+/NiTiO3) ferromagnetic nanoparticles with different concentrations of Fe (0.2, 0.4, and 0.6 mol) were synthesized using precipitation route with precursor source such as nickel nitrate and iron nitrate solutions. The prepared magnetic nanopowders were investigated through X-ray diffraction (XRD), Fourier transform infrared, scanning electron microscope, X-ray fluorescence, Brunauer–Emmett–Teller, vibrating sample magnetometer, and electrochemical impedance spectroscopy to explore the structural, ferromagnetic, and dielectric properties. The obtained XRD pattern shows formation of iron doped nickel titanate in orthorhombic structure. The crystallite size ranges from 57 to 21 nm and specific surface area ranges from 11 to 137 m2 g−1. The hysteresis loops of nanomagnetic materials show ferromagnetic behavior with higher magnitude of coercivity (Hc) 867–462 Oe. The impedance analysis of ferromagnetic materials explores the ferro-dielectric behavior with enhanced properties of Fe3+/NiTiO3 nanoparticles at higher Fe content.