Composition-controlled Fe-Ni alloy fine particles synthesized by reduction-annealing of polyol-derived Fe-Ni hydroxide

S. Fujieda, W. Miyamura, K. Shinoda, S. Suzuki, B. Jeyadevan

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Fe-Ni hydroxide fine particles with a layered double hydroxide-type structure were precipitated as an intermediate in polyol (ethyleneglycol) solution with Fe compositions ranging between about 10 and 90 at%. Subsequent reduction-annealing of the above polyol-derived particles with 13-56 at% Fe at 673 K resulted in the synthesis of fcc Fe-Ni alloy fine particles with their sizes less than about 50 nm. The lattice constants of fcc Fe-Ni alloy particles were close to those of the bulk fcc Fe-Ni alloy with similar compositions. X-ray absorption spectroscopy measurements suggested that fcc Fe-Ni alloy was formed through simultaneous reduction of Fe and Ni in Fe-Ni hydroxide. Consequently, the reduction-annealing of polyol-derived Fe-Ni hydroxide fine particles is proved to be an effective process for obtaining composition-controlled Fe-Ni alloy fine particles.

Original languageEnglish
Pages (from-to)1645-1651
Number of pages7
JournalMaterials Transactions
Volume57
Issue number9
DOIs
Publication statusPublished - 2016

Keywords

  • Layered double hydroxides
  • Nanoparticles
  • Polyol
  • X-ray absorption spectroscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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