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 language | English |
|---|---|
| Pages (from-to) | 1645-1651 |
| Number of pages | 7 |
| Journal | Materials Transactions |
| Volume | 57 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2016 |
Keywords
- Layered double hydroxides
- Nanoparticles
- Polyol
- X-ray absorption spectroscopy