One-dimensional carbon nanotube-FexCy nanocrystal composite

摘要

Ferromagnetic material-carbon nanotube composites are promising magnetic nanowires that have recently been prepared, with many possible applications. In this paper, using carbon nanotubes as a nucleate template, one-dimensional carbon nanotube-FexCy nanocrystal composites were successfully synthesized by the chemical combination of sputtered Fe atoms and carbon nanotubes at high temperature. The structural characterization, by scanning electron microscopy, x-ray diffraction and high-resolution transmission electron microscopy, reveals that FexCy nanocrystal particles (5-20 nm diameter) were uniformly embedded in the walls of the carbon nanotubes with a high density. In addition, the formation mechanism of the composite is discussed.