Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 20, Issue 8, Pages 5239-5245Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2020.18528
Keywords
Cobalt Ferrite; Magnetic; Mossbauer; Rare Earth
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Lanthanum (La) and gadolinium (Gd) doped cobalt ferrite nanoparticles are synthesized using a soft chemical approach. The analysis of these ferrites using X-ray diffraction (XRD) and transmission electron microscopy (TEM) shows that lattice spacing decreases in the doped ferrite samples. Magnetization data indicates towards the decrease of saturation magnetisation but increase in coercivity with doping. Mossbauer spectroscopy measurements at room temperature indicate increased occupancy of trivalent cations at tetrahedral site. The addition of rare earth dopants reduces the hard-magnetic character of cobalt ferrite.
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