Magnetism of amorphous carbon nanofibers

Ma, S.; Xia, J. H.; Srikanth, Vadali V. S. S.; Sun, X.; Staedler, T.; Jiang, X.; Yang, F.; Zhang, Z. D.
December 2009
Applied Physics Letters;12/28/2009, Vol. 95 Issue 26, p263105
Academic Journal
Amorphous carbon nanofibers (ACNFs) have been synthesized by a thermal chemical vapor deposition technique. The ACNFs grow as two branches perpendicular to {111} facets of a catalytic copper nanoparticle. The carbon nanofibers are composed of disordered localized nanofragments which in turn consist of several graphene layers. The ACNFs show a paramagnetic characteristics at 2, 5, and 10 K. The magnetic moments are suggested to originate from a large amount of defects in the graphene layers of the nanofragments.


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