Document Type : Original Article
Department of Physics, Payam Noor University, Iran
The present study investigated the cadmium-cobalt ferrite nanoparticles doped with chromium and ytterbium ions synthesized using the hydrothermal method.We analysedthe samples byX-ray diffraction(XRD), Field Emission Scanning Electron Microscope(FESEM), and vibrating Sample Magnetometer devices(VSM). XRDconfirmed the formation of the nearly pure spinel structure.Micrographs obtained by FESEM showed spherical shapes for nanoparticles, and by usingImageJ software, an average particle size of about 40 nm was obtained.The saturation magnetization, theremnant magnetization, and the coercivity field were estimated using the hysteresis loop of the samples. The maximum coercivity field (815 Oe )wasobtained in the sample doped with ytterbium. This could be due to enhancing the spin-orbit coupling and magnetocrystalline anisotropy constantof the cadmium-cobalt ferrite sample withytterbium doping. The saturation magnetization decreased with the dopingof both ions due to the lower magnetic moment of the doped ions compared to the Fe ion.