%0 Journal Article
%A Prados, C.
%A Crespo del Arco, Patricia
%A González, J. M.
%A Hernando Grande, Antonio
%A Marcos, J. F.
%A Gancedo, R.
%A Grobert, N.
%A Terrones, M.
%A Walton, R. M.
%A Kroto, H. W.
%T Hysteresis shift in Fe-filled carbon nanotubes due to γ-Fe
%D 2002
%@ 1098-0121
%U https://hdl.handle.net/20.500.14352/60113
%X The phase distribution of high aspect ratio, Fe-filled carbon nanotubes prepared by pyrolyzing a mixture of powered ferrocene and C_(60) has been determined by means of Mössbauer spectroscopy. Our results for that characterization are closely related to the observation, after field cooling processes, of a hysteresis loop shift and clearly suggest a spatial phase distribution which includes the presence of a g-Fe/α-Fe interface. The temperature ependence of the hysteresis loop shift is discussed in terms of localized regions at that interface exhibiting uncompensated antiferromagnetism within reduced dimensions.
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