Synthesis, Spectral, and Magnetic Studies of Yb-Doped CoFe2O4
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY(2023)
摘要
Rare Earth modification effects the crystal structure and magnetic behavior in ferrites because of the role of unpaired valence electrons of f-orbital. In this work, the Co-ferrite was modified by substituting Yb3+ at Fe3+ ions to report the structural and magnetic correlations. The rare earth-doped cobalt ferrites of the compositions CoFe2-xYbxO4 (x = 0 to 0.02) were synthesized by the solid-state reaction method. The structural studies were carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM) also by Raman, and Fourier transforms infrared (FTIR) spectroscopic techniques. The optical and magnetic properties are studied by UV-visible spectroscopy and magnetic isotherm loops at 300 K respectively. The x = 0.005 substitution is observed to have distinct properties compared to other compositions. There is a vast change in band gap as well as magnetization for x = 0.005. Further, the x = 0.01, 0.015, and 0.02 samples seem to have similar behavior but there is considerable variation compared to pure Co-ferrite. The small additions of rare-earth elements may create high anisotropy to appear the large change in the structural and magnetic properties.
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关键词
magnetic studies,yb-doped
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