Interaction of Fe+ with the C60 surface: A study about the feasibility of endohedral doping

Reinke, P.; Eyhusen, S.; Büttner, M.; Oelhafen, P.
May 2004
Applied Physics Letters;5/31/2004, Vol. 84 Issue 22, p4373
Academic Journal
The feasibility of endohedral iron doping of C60 is studied using a mass selected ion beam to create an Fe+ beam with variable energy (60–380 eV, 1.2×10-3 C) which is directed at a C60 thin film. The surface is characterized by x-ray photoelectron spectroscopy, and oxidation of the samples is used to discriminate between Fe@C60 and carbides. The fullerene cages are damaged during the irradiation, and participate in direct Fe–C bond formation. The reaction with oxygen indicates the absence of sizable amount of Fe@C60. Comparison with reference samples composed of iron and damaged fullerene layers (by Ar+ irradiation) supports this interpretation. The experiment serves as a model study for the investigation of different metal-fullerene combinations. © 2004 American Institute of Physics.


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