Synthesis of ferromagnetic nanoparticles with a core/shell structure by a self-propagating combustion method

Title
Synthesis of ferromagnetic nanoparticles with a core/shell structure by a self-propagating combustion method
Author(s)
김기현조상근[조상근]전광원[전광원]김진봉[김진봉]G.W. Moon[G.W. Moon]김종렬[김종렬]
Keywords
MAGNETIC-PROPERTIES; BIOMEDICAL APPLICATIONS; REDUCTION
Issue Date
201104
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF APPLIED PHYSICS, v.109, no.7
Abstract
Ferromagnetic nanoparticles with a core/shell structure were fabricated by a self-propagating combustion method and subsequent hydrogen reduction process. Before the reduction process, synthesized particles were Fe oxide phases. Transmission electron micrographs confirmed that the nanoparticles were composed of alpha-Fe core and Fe-Al oxide shell after the reduction process. The saturation magnetization of the nanoparticles was measured about 180 emu/g and the permeability kept constant value of about 1.8 up to 10 GHz without any noticeable loss. These microstructural and magnetic analyses showed that the oxide phase changed into alpha-Fe and then Al atoms diffused out to the surface of the particles during the reduction process. (C) 2011 American Institute of Physics. [doi:10.1063/1.3563062]
URI
http://hdl.handle.net/YU.REPOSITORY/25369http://dx.doi.org/10.1063/1.3563062
ISSN
0021-8979
Appears in Collections:
이과대학 > 물리학과 > Articles
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