NDLI: Preparation of Magnetic Cu$_{0.5}$Mg$_{0.5}$Fe$_{2}$O$_{4}$ Nanoparticles and Kinetics of Thermal Process of Precursor

Content Provider	Springer Nature Link
Author	Huang, Jinwen Su, Peng Wu, Wenwei Li, Yongni Wu, Xuehang Liao, Sen
Copyright Year	2012
Abstract	Cu$_{0.5}$Mg$_{0.5}$Fe$_{2}$O$_{4}$ precursor was synthesized by solid-state reaction at low heat using CuSO$_{4}$⋅5H$_{2}$O, MgSO$_{4}$⋅6H$_{2}$O, FeSO$_{4}$⋅7H$_{2}$O, and Na$_{2}$C$_{2}$O$_{4}$ as raw materials. The spinel Cu$_{0.5}$Mg$_{0.5}$Fe$_{2}$O$_{4}$ was obtained via calcining precursor above 300 °C in air. The precursor and its calcined products were characterized by thermogravimetry and differential scanning calorimetry (TG/DSC), Fourier transform FT-IR, X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDS), and vibrating sample magnetometer (VSM). The result showed that Cu$_{0.5}$Mg$_{0.5}$Fe$_{2}$O$_{4}$ obtained at 600 °C had a saturation magnetization of 36.8 emu g$^{−1}$. The thermal process of Cu$_{0.5}$Mg$_{0.5}$Fe$_{2}$O$_{4}$ precursor experienced two steps, which involved the dehydration of the five and a half crystal water molecules at first, and then decomposition of Cu$_{0.5}$Mg$_{0.5}$Fe$_{2}$(C$_{2}$O$_{4}$)$_{3}$ into crystalline Cu$_{0.5}$Mg$_{0.5}$Fe$_{2}$O$_{4}$ in air. Based on the Kissinger equation, the values of the activation energy associated with the thermal process of the precursor were determined to be 85 and 152 kJ mol$^{−1}$ for the first and second thermal process steps, respectively.
Starting Page	1971
Ending Page	1977
Page Count	7
File Format	PDF
ISSN	15571939
Journal	Journal of Superconductivity and Novel Magnetism
Volume Number	25
Issue Number	6
e-ISSN	15571947
Language	English
Publisher	Springer US
Publisher Date	2012-04-10
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cu$_{0.5}$Mg$_{0.5}$Fe$_{2}$O$_{4}$ Magnetic properties Solid-state reaction at low heat Thermal process Non-isothermal kinetics Strongly Correlated Systems, Superconductivity Condensed Matter Physics Magnetism, Magnetic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

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