Preparation of FeCo/Cu Core Shell Magnetic Nanoparticles

Abstract

FeCo/Cu core shell structure with FeCo as a core and copper as the shell has been successfully synthesized by displacement reaction. The morphology, grain size, lattice strain, and magnetic properties of all the samples were examined by using transmission electron microscopy (TEM), X-ray diffraction (XRD), and vibrating sample magnetometer (VSM). Annealing temperatures and its effect on magnetic properties of the FeCo/Cu core shell particles was investigated. A maximum coercivity (Hc) of 398.84 Oe was recorded for the sample heat treated in magnetic field. The blocking temperatures (TB) and squareness (Mr/Ms) of the sample gradually increased due to the influence of temperature and magnetic field.