The potential applications of magnetoelectric composites found much attention in the past years due to their wide range of use as in sensors and memory storages elements. According to the thesis results, the composite may have possible applications in magnetic field sensing probes and linear ME devices. Keywords: Ni-nanoferrite, Magnetoelectric nanocomposite, Structural properties, IR spectra, TEM, dielectric properties, conductivity, electric hysteresis. Supervisors for the Master thesis: 1- Prof. Dr. D.Sc. Mohamed Ali Ahmed 2- Prof. Dr. Salwa Fahim Mansour