J Mater Sci Technol ›› 2005, Vol. 21 ›› Issue (03): 297-300.

• Research Articles • Previous Articles     Next Articles

Synthesis and Characterization of Nanocapsules of a-Fe(NiCoAl) Solid-solution

Dianyu GENG, J.C.Kim, C.J.Choi, Chonglin CHEN, Xinguo ZHAO, Zhidong ZHANG   

  1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, and International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China...
  • Received:2004-10-25 Revised:2004-12-08 Online:2005-05-28 Published:2009-10-10
  • Contact: Dianyu GENG

Abstract: α-Fe(NiCoAl) solid-solution nanocapsules were prepared with pure powders of Fe, Ni, Co and Al by the plasma arc-discharging using a copper crucible. The shapes of the nanocapsules are in polyhedrons with the core/shell structure. The body centered cubic (BCC) phase is formed in the core. The size of the nanocapsules is in the range of 10~120 nm and the thickness of the shell is 4~11 nm. Saturation magnetization Js=150 Am2/kg and coercivity iHC=24.3 kA/m are achieved for the nanocapsules.

Key words: Nanocapsules, α-Fe solid solution, Plasma arc discharge, Magnetic properties