粒子成長速度がFeナノ粒子の飽和磁化に及ぼす影響

概要

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Monodisperse Fe nanoparticles have been prepared by a thermal decomposition of an iron carbonyl. In order to investigate effect of the growth rate and decomposition rate of the iron carbonyl on the saturation magnetization of the Fe nanoparticles, a growth rate was obtained from the results on a reaction time dependence of particle diameter of the Fe nanoparticles. Furthermore, decomposition rate of the iron carbonyl was quantitatively obtained from the decrease in an Infrared (IR) spectra peaks of the iron carbonyl. The saturation magnetization of the Fe nanoparticles tended to be improved under the condition with high decomposition rate of iron carbonyl and low growth rate. These results indicate that two such parameters are important factors to promote the growth of the phase having high saturation magnetization in the Fe nanoparticles synthesis process.
社団法人　日本磁気学会の論文
2009-05-01