Journal
SURFACE SCIENCE
Volume 600, Issue 18, Pages 3642-3645Publisher
ELSEVIER
DOI: 10.1016/j.susc.2006.02.055
Keywords
surface passivation; magnetic nanoparticle; cobalt ferrite; Raman spectroscopy
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A detailed study of the surface passivation process in superparamagnetic cobalt ferrite nanoparticles has been carried out using micro Raman spectroscopy. In addition to Raman spectroscopy, X-ray diffraction and atomic absorption spectroscopy were also used to investigate passivated and non-passivated samples. The data were discussed in terms of changes in the structural characteristics of the samples considering the introduction of Fe ions during the passivation. We found an improvement of the nanoparticle crystallinity due to the passivation process. (c) 2006 Elsevier B.V. All rights reserved.
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