C60FeC60 Complexes in Fe Intercalated Fullerite Studied by X-Ray Absorption
E. Sobczaka, A. Traverseb, R. Nietubyća, Y. Swilema, P. Byszewskia,c and D. Żymierskaa
aInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
bLURE, Centre Universitaire Paris-Sud, 91405 Orsay Cedex, France
cInstitute of Vacuum Technology, Długa 44/50, 00-241 Warsaw, Poland
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The aim of Fe K edge XANES and EXAFS studies is to reveal the local structure around Fe ions in C60Fex intercalated fullerites. The measurements are performed in transmission mode at LN2 temperature for C60Fex powder samples and other materials: ferrocene Fe(C5H5)2, Fe metal foil and α-Fe2O3. The main result is that the XAFS spectra of the C60Fe2 intercalate is almost identical to that of ferrocene and very different from α-Fe and α-Fe2O3. The results support opinion that in the C60Fex intercalates the ferrocene-like bonds in complexes C60FeC60 are formed. Additionally, the XAFS spectra showed that neither remarkable amount of Fe metallic clusters nor oxidized iron particles are present in the C60Fex sample.
DOI: 10.12693/APhysPolA.91.877
PACS numbers: 71.20.Tx, 61.48.+c, 61.10.Ht