Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 323, Issue 10, Pages 1238-1241Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2010.11.013
Keywords
Cobalt ferrite; Nanoparticle; Magnetic fluid; Hydrothermal
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Magnetic fluid based on cobalt ferrite nanoparticles was obtained using a hydrothermal treatment added to the Massart procedure. This treatment increases the average size of the nanoparticles from 11.9 to 18.7 nm and also improves the dispersity and crystallinity of the cobalt ferrite particles. The nanoparticles obtained after the hydrothermal treatment were dispersed in aqueous solvent by the classical procedure for ionic magnetic fluids. The ferrofluid thus obtained is stable at pH7 and may be useful for hyperthermia applications. (C) 2010 Elsevier B.V. All rights reserved.
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