Abstract
The spinel Cu0.48Ni0.52Fe2O4 was synthesized by calcining Cu0.48Ni0.52Fe2(C2O4)3⋅5H2O above 300 °C in air for 1.5 h. The precursor and its calcined products were characterized by thermogravimetry and differential scanning calorimetry, FT-IR, X-ray powder diffraction, and vibrating sample magnetometer. The result showed that magnetic properties of Cu0.48Ni0.52Fe2O4 were influenced by calcination temperature, and Cu0.48Ni0.52Fe2O4 obtained at 600 °C had a specific saturation magnetization of 40.0 emu g−1. The thermal process of Cu0.48Ni0.52Fe2(C2O4)3⋅5H2O below 450 °C experienced two steps which involved, at first, the dehydration of the five crystal water molecules, then decomposition of Cu0.48Ni0.52Fe2(C2O4)3 into cubic Cu0.48Ni0.52Fe2O4 in air. In the DTG curve, two DTG peaks indicated that precursor experienced mass loss of two steps.
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This study was financially supported by the National Nature Science Foundation of China (Grant No. 21161002) and the Guangxi Nature Science Foundation of China (Grant No. 2011GXNSFA018036).
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Li, Y., Wu, X., Wu, W. et al. Magnetic Properties of Cu0.48Ni0.52Fe2O4 and Thermal Process of Precursor. J Supercond Nov Magn 26, 2153–2158 (2013). https://doi.org/10.1007/s10948-012-1814-8
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DOI: https://doi.org/10.1007/s10948-012-1814-8