Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1875074 | Physics Procedia | 2010 | 5 Pages |
Abstract
CoFe2O4 nanoparticles were synthesized by co-precipitating Co(II) and Fe(III) ions in alkaline medium following temperature annealing, aiming to study the influence of the sintering temperature on the structure of the nanosized cubic ferrite. A group of powder samples were submitted to thermal treatment at 373, 623, 1023, 1273, and 1473Â K during 30 minutes in atmospheric air. For the purpose of our investigation cobalt ferrite nanoparticles were evaluated by atomic absorption spectrophotometry, X-ray diffraction (XRD), Raman, and Mössbauer spectroscopy. The chemical composition of cobalt ferrite samples, expressed as the [Fe]/[Co] ratio, was found as 2.1. Our results reveal that the increase of the sintering temperature modifies the cation distribution profile, resulting in an improvement of the nanomaterial's properties.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
P.P.C. Sartoratto, M.A.G. Soler, T.M. Lima, F.L.R. Silva, T.V. Trufini, V.K. Garg, A.C. Oliveira, P.C. Morais,