Synthesis Of Fe-Co Alloy Particles By Modified Polyol Process
IEEE TRANSACTIONS ON MAGNETICS(2006)
摘要
The successful synthesis of Fe-Co nanoparticles by using a modified polyol process is reported. The formation of the alloy nanoparticles was confirmed by X-ray diffraction and X-ray extended absorption fine structure analyses. The concentration of iron in these particles could be varied between 40% and 90% by controlling the reaction conditions such as initial Fe/Co ratio, reaction temperature and hydroxyl ion concentration. The shape of the particles changed from spherical to cubic when the concentration of Fe was increased from 40 to above 60 at. %. The highest magnetization of 225 emu/g was recorded for Fe70Co30 nanoparticles. The magnetization of these particles decreased by about 20% when exposed to severe oxidizing atmosphere for seven days.
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关键词
chemical synthesis, Fe-Co nanoparticles, polyol process, soft magnetic materials
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