J. Phys. IV France 7 (1997) C2-1235-C2-1236
XAFS Study of Fe Intercalated FulleriteE. Sobczak1, R. Nietubyc1, A. Traverse2, D. Zymierska1, Y. Swilem1 and P. Byszewski1
1 Institute of Physics P.A.S., Al. Lotników 36/42, 02-668 Warsaw, Poland
2 LURE, Centre Universitaire Paris-Sud, 91405 Orsay cedex, France
Fe K edge XANES and EXAFS studies were performed to reveal the local structure around Fe ions in C60Fe2 fullerites. The measurements were carried out in transmission mode at LN2 temperature for the monoclinic and fcc C60Fe2 fullerite powder samples and other materials : ferrocene Fe(C5H5)2. Fe metal foil and α-Fe2O3. The XAFS spectra of the monoclinic C60Fe2 fullerite is almost identical to that of ferrocen. The XAFS spectra of the fcc C60Fe2 fullerite have shown that Fe neutral atoms, Fe2+ and Fe3+ ions appear in this fullerite due to annealing at temperature 850 K. The EXAFS study has proved the presence of small Fe clusters in this form of fullerite.
© EDP Sciences 1997