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. © 2005 The American Physical Society.

authors

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

publication date

• 2005-01-01

published in

• Physical Review Letters  Journal

keywords

• Dipolar interactions; Ferromagnetic nanowires; Helical spin vortices; Hysteresis loops; Hysteresis; Iron; Magnetization; Nanostructured materials; Vortex flow; Carbon nanotubes

Digital Object Identifier (DOI)

• 10.1103/PhysRevLett.94.216102

start page

end page

volume

• 94

issue

• 21