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Synthesis and coating of superparamagnetic monodispersed iron oxide nanoparticles was carried out by chemical solution method. Controlled co-precipitation technique was used to prevent undesirable critical oxidation of Fe 2+ . The obtained Fe 3 O 4 nanoparticles were coated with sodium oleate. Low-field AC susceptibility and SQUID measurement show superparamagnetism with a...
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