Abstract
X-ray powder diffraction (XRD), Mössbauer effect (ME) spectroscopy and neutron diffraction (ND) were used to study the structural and magnetic properties of CoFe2-xCexO4 nanoferrites, where (x = 0.0 ≤ 0.1). The lattice parameter (a) and particle size (D) were obtained from Rietveld profile method. The particle size decreased with increasing the Ce content (x). The (ME) spectroscopy confirmed the magnetic order in all the studied samples, with the signature of increasing superparamagnetic contribution by decreasing (D). The cation distribution obtained from the (ME) spectroscopy suggested a partial inverse spinel structure for all the samples and the degree of inversion (δ) was calculated. The (ND) measurements for the samples with (x = 0.0, 0.01 and 0.07) supported the partial inverse spinel structure picture suggested by (ME) spectroscopy. The structure parameters obtained from both (XRD) and (ND) were in agreements.
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