Hysteresis shift in Fe-filled carbon nanotubes due to γ-Fe | Zendy

C. Prados | Zendy; P. Crespo | Zendy; J. M. González | Zendy; A. Hernando | Zendy; José F. Marco | Zendy; R. Gancedo | Zendy; Nicole Grobert | Zendy; Mauricio Terrones | Zendy; R. M. Walton | Zendy; Harold W. Kroto | Zendy

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Hysteresis shift in Fe-filled carbon nanotubes due to γ-Fe

Author(s) -

C. Prados,

P. Crespo,

J. M. González,

A. Hernando,

José F. Marco,

R. Gancedo,

Nicole Grobert,

Mauricio Terrones,

R. M. Walton,

Harold W. Kroto

Publication year - 2002

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.65.113405

Subject(s) - materials science , hysteresis , carbon nanotube , phase (matter) , mössbauer spectroscopy , antiferromagnetism , ferrocene , condensed matter physics , carbon fibers , magnetic hysteresis , spectroscopy , characterization (materials science) , analytical chemistry (journal) , nuclear magnetic resonance , chemical physics , magnetic field , nanotechnology , crystallography , magnetization , composite material , chemistry , physics , composite number , electrochemistry , electrode , quantum mechanics , chromatography

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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