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ABSTRACT: Iron‐filled nanotubules were synthesized in a carbon arc in the presence of He and Fe(CO) 5 gases. The consumption of the Fe(CO) 5 inside the arc chamber was controlled by the pressure of the pentacarbonyliron Fe(CO) 5 gas. Different shapes and filling extents of nanotubules were found depending on the pentacarbonyliron concentration supplied. Based on high‐resolution transmission electron microscope images, we propose a growth model of iron‐filled carbon nanotubules. The growth proceeds through the deposition and surface diffusion of carbon on the liquidlike metal. The hollow tubules probably grow spontaneously. © 1996 American Institute of Physics.
Journal of Applied Physics 08/1996; · 2.21 Impact Factor