Creation of helical vortices during magnetization of aligned carbon nanotubes filled with Fe: Theory and experiment

F. López-Urías, E. Muñoz-Sandoval, M. Reyes-Reyes, A. H. Romero, M. Terrones, J. L. Morán-López

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Abstract

We report a novel magnetic phenomenon consisting of the formation of helical spin configurations during the magnetization of densely packed ferromagnetic nanowires encapsulated inside carbon nanotubes. We studied the hysteresis loops when the magnetic fields are applied parallel and perpendicular to the nanotubes axes. We also performed theoretical calculations on aligned nanowire arrays that clearly indicate the creation of helical spin vortices in the hysteresis loops. The latter are caused by the presence of strong dipolar interactions among neighboring wires.

Original languageEnglish (US)
Article number216102
JournalPhysical Review Letters
Volume94
Issue number21
DOIs
StatePublished - Jun 3 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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