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Facile approach for synthesis of high moment Fe/ferrite and FeCo/ferrite core/shell nanostructures

Title
Facile approach for synthesis of high moment Fe/ferrite and FeCo/ferrite core/shell nanostructures
Authors
Abbas, M[Abbas, Mohamed]Islam, MN[Islam, Md. Nazrul]Rao, BP[Rao, B. Parvatheeswara]Abou Aitah, KE[Abou Aitah, K. E.]Kim, C[Kim, CheolGi]
DGIST Authors
Abbas, M[Abbas, Mohamed]; Kim, C[Kim, CheolGi]
Issue Date
2015-01-15
Citation
Materials Letters, 139, 161-164
Type
Article
Article Type
Article
Keywords
Core-ShellFe/FerriteFeCo/FerriteHigh MomentMagnetic PropertiesSono-Chemical MethodThermal-AnnealingThermal Annealing
ISSN
0167-577X
Abstract
In the present study, we developed a facile approach for synthesis of high magnetic moment monodisperse Fe/ferrite and FeCo/ferrite core/shell nanoparticles. Fe3O4 and CoFe2O4 nanoparticles were at first synthesized through sonochemical process, followed by thermal annealing in presence of hydrogen (H2) gas for 2 h for reduction into Fe and FeCo nanoparticles, respectively. Then, oxidation of Fe and FeCo nanoparticles up to 48 h in air atmosphere resulted in complete formation of Fe/ferrite and FeCo/ferrite core/shell nanostructures. Different analytical techniques such as X-ray diffraction, transmission electron microscopy, energy dispersive spectroscopy and vibrating sample magnetometer were used to characterize and confirm the successful formation of the core/shell nanostructures. In view of the obtained high magnetic Fe or FeCo core and biocompatible ferrite shell, these core-shell Fe/ferrite and FeCo/ferrite nanoparticles are expected to be promising materials for various bio-sensing applications. © 2014 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2943
DOI
10.1016/j.matlet.2014.10.078
Publisher
Elsevier B.V.
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


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