Mössbauer study of iron-containing carbon nanotubes

J. F. Marco, J. R. Gancedo, A. Hernando, P. Crespo, C. Prados, J. M. González, N. Grobert, M. Terrones, D. R.M. Walton, H. W. Kroto

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Abstract

57Fe transmission Mössbauer at temperatures between 18 and 298 K and magnetic measurements have been used to characterize Fe-filled carbon nanotubes which were prepared by pyrolisis of Ferrocene + C60 at atmospheric pressure under an Ar atmosphere at 1050°C. The Mössbauer data have shown that the Fe phases encapsulated within the carbon nanotubes are α-Fe, Fe3C and γ-Fe. The magnetic results are compatible with the Mössbauer data. Taken together the results allow us to propose a simple picture of the distribution of iron phases within the carbon nanotubes which would consist of an α-Fe core surrounded by an γ-Fe shell, finally covered by an Fe3C layer.

Original languageEnglish (US)
Pages (from-to)535-542
Number of pages8
JournalHyperfine Interactions
Volume139-140
Issue number1-4
DOIs
StatePublished - 2002

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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