Synthesis of fe-co alloy particles by modified polyol process

D. Kodama, Y. Sato, B. Jeyadevan, Kazuyuki Tohji, K. Shinoda, K. Sato

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2796-2798
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number10
Publication statusPublished - 2006 Oct


  • Chemical synthesis
  • Fe-Co nanoparticles
  • polyol process
  • soft magnetic materials

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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