title: Characterization of magnetic nanoparticles using energy-selected transmission electron microscopy.
abstract: Fe, Co, and Ni magnetic nanoparticles have been characterized using energy-selected imaging in a high-resolution transmission electron microscope. The samples comprised Fe/FeO x and Co/CoO x nanoparticles synthesized by inert gas evaporation and a Ni/C nano-composite prepared by a sonochemical method. All of the particles examined were found to be between 5 and 30 nm in size, with the Fe and Co crystals coated in 5-10 nm of metal oxide layer and the Ni metallic crystallites embedded in an amorphous carbon spherical matrix.
authors.affiliation: Instituto de Ciencia de Materiales de Sevilla, CSIC, Américo Vespucio s/n, 41092-Sevilla, Spain. sayagues@cica.es
authors.forename: María J
authors.initials: MJ
authors.lastname: Sayagués
authors.forename: Teresa C
authors.initials: TC
authors.lastname: Rojas
authors.forename: Asunción
authors.initials: A
authors.lastname: Fernández
authors.forename: Rafal E
authors.initials: RE
authors.lastname: Dunin-Borkowski
authors.forename: Ron C
authors.initials: RC
authors.lastname: Doole
authors.forename: John L
authors.initials: JL
authors.lastname: Hutchison
mesh_terms: D003035:Cobalt; D003460:Crystallization; D007501:Iron; D008280:Magnetics; D008854:Microscopy, Electron / Q000379:methods*; D036103:Nanotechnology; D009532:Nickel
chemical_list: D003035:Cobalt; D009532:Nickel; D007501:Iron