Multiferroic and magnetic characterization of nickel ferrite- barium titanate nanocomposites

Nickel ferrite (NiFe2O4) samples were prepared by the modified sol–gel technique which is an effective, simple, and rapid synthesis method. Multiferroic composites of nickel ferrite and barium titanate (NiFe2O4-BaTiO3) in the ratio 1:1, 1:2, 2:1 as well as composites of nickel zinc ferrite and barium titanate (Ni1-xZnxFe2O4-BaTiO3) in the ratio 2:1 were synthesized by solid-state reaction method. The formation of nickel ferrite and barium titanate heterogeneous composites was identified using X-ray diffraction analysis (XRD). Magnetic properties were studied using vibrating sample magnetometer at 300 K. The coexistence of ferroelectric and ferromagnetic order confirmed through Magneto-electric (ME) coupling measurement.