  The electronic structure of carbon shells of carbon encapsulated iron
nanoparticles carbon encapsulated Fe@C has been studied by X-ray resonant
emission and X-ray absorption spectroscopy. The recorded spectra have been
compared to the density functional calculations of the electronic structure of
graphene. It has been shown that an Fe@C carbon shell can be represented in the
form of several graphene layers with Stone-Wales defects. The dispersion of
energy bands of Fe@C has been examined using the measured C Ka resonant X-ray
emission spectra.
