Tunable Magnetic Properties in CuCr2−x Fe x O4 Ceramics by Doping of Fe

CuCr2−x Fe x O4 ceramics have been successfully synthesized using the sol–gel method for the first time. With pure formation, material structure has been characterized by x-ray diffraction. The samples have been identified as having the spinel structure with formulae CuCr2−x Fe x O4. Micrographs obtained by scanning electron microscopy show the dense microstructure of the samples. The stoichiometric ratio of the ceramics has been measured through energy dispersive spectra. Magnetic properties of CuCr2−x Fe x O4 ceramics have been discussed. Temperature dependence of magnetization presents the gradually increasing irreversible temperature as the content of Fe element increases from x = 0 to 1. Coercive field (H C), remanent magnetization (M r), and saturation magnetization (M S) respectively display the monotonous variation phenomena with increasing content of Fe. The increasing M r, M S and the decreasing H C can be attributed to the change of magnetic exchange interaction because of the doped Fe. It also proves that the magnetic properties of CuCr2−x Fe x O4 ceramics can be effectively tuned by the doping content of Fe.