Magnetic properties of polymerized C\(_{60}\) with Fe

Magnetic properties of polymerized C\(_{60}\) with Fe

We provide evidence that high-pressure high-temperature (2.5 GPa and 1040 K) treatment of mixtures of iron with fullerene powders leads to the complete transformation of iron into iron carbide Fe\(_3\)C. The comparison of the magnetic properties (Curie temperature and magnetic moment) of the here st...

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Veröffentlicht in:arXiv.org 2006-11
Hauptverfasser: Talyzin, A, Dzwilewski, A, Dubrovinsky, L, Setzer, A, Esquinazi, P
Format: Artikel
Sprache:eng
Schlagworte:
Carbon
Curie temperature
Ferromagnetism
Fullerenes
High temperature
Iron carbides
Magnetic fields
Magnetic moments
Magnetic properties
Magnetism
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Zusammenfassung:We provide evidence that high-pressure high-temperature (2.5 GPa and 1040 K) treatment of mixtures of iron with fullerene powders leads to the complete transformation of iron into iron carbide Fe\(_3\)C. The comparison of the magnetic properties (Curie temperature and magnetic moment) of the here studied samples and those for the ferromagnetic polymer Rh-C\(_{60}\) indicates that the main ferromagnetic signal reported in those samples is due to Fe\(_3\)C and not related to the ferromagnetism of carbon as originally interpreted. Taking into account the results obtained in this study the original paper on ``Magnetic carbon" (Nature {\bf 413}, 716 (2001)) was recently retracted.
ISSN:2331-8422
DOI:10.48550/arxiv.0602306