Abstract
CuCr2−xFexO4 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−xFexO4. 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−xFexO4 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 (HC), remanent magnetization (Mr), and saturation magnetization (MS) respectively display the monotonous variation phenomena with increasing content of Fe. The increasing Mr, MS and the decreasing HC can be attributed to the change of magnetic exchange interaction because of the doped Fe. It also proves that the magnetic properties of CuCr2−xFexO4 ceramics can be effectively tuned by the doping content of Fe.
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