The influence of La-substituted Cu0.5Co0.5Fe2O4 nanoparticles on its structural and magnetic properties
Date
2015
Authors
Lin, Q.
Yuan, G.
He, Y.
Wang, L.
Dong, J.
Yu, Y.
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Materials & Design, 2015; 78:80-84
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Lanthanum substituted cobalt ferrite Cu0.5Co0.5Fe2−xLaxO4 (x = 0, 0.01, 0.03, 0.05) powders have been prepared by a sol–gel method. X-ray diffraction (XRD) results indicate the production of a single phase cubic-spinel structure. Both the lattice parameter and grain size decrease with the substitution of La3+ ions. Scanning electron microscope (SEM) shows that the ferrite powers are nanoparticles. Room temperature Mössbauer spectra of Cu0.5Co0.5Fe2−xLaxO4 are two normal Zeeman-split sextets, which display ferrimagnetic behavior. The saturation magnetization, coercivity and residual magnetization increase at first and then decrease with the incorporation of La3+.
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Copyright 2015 Elsevier