title: Electrical detection of individual magnetic nanoparticles encapsulated in carbon nanotubes.
abstract: We report on low-temperature electrical transport measurements of single-walled carbon nanotubes (SWNTs) filled in their inner core with one-dimensional cobalt nanoparticles. The electrical transport properties of the hybrid devices are strongly sensitive to the magnetization reversal of isolated magnetic nanoparticles, resulting in strong hysteretic variations of the magnetoconductance. The magnetic anisotropy of a one-dimensional encapsulated cobalt nanoparticle is investigated, establishing an unusually strong dominating contribution of magnetic surface anisotropy.
authors.affiliation: Institut Néel, CNRS and Université J. Fourier, BP 166, 38042 Grenoble Cedex 9, France.
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Cleuziou
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Wernsdorfer
authors.forename: Thierry
authors.initials: T
authors.lastname: Ondarçuhu
authors.forename: Marc
authors.initials: M
authors.lastname: Monthioux
mesh_terms: D004553:Electric Conductivity; D004574:Electromagnetic Fields; D008280:Magnetics; D008422:Materials Testing; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size
chemical_list: D037742:Nanotubes, Carbon