Characterization of magnetic nanoparticles using energy-selected transmission electron microscopy.
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.
Sayagués
María J
MJ
Instituto de Ciencia de Materiales de Sevilla, CSIC, Américo Vespucio s/n, 41092-Sevilla, Spain. sayagues@cica.es
Rojas
Teresa C
TC
Fernández
Asunción
A
Dunin-Borkowski
Rafal E
RE
Doole
Ron C
RC
Hutchison
John L
JL
D003035:Cobalt; D003460:Crystallization; D007501:Iron; D008280:Magnetics; D008854:Microscopy, Electron / Q000379:methods*; D036103:Nanotechnology; D009532:Nickel
D003035:Cobalt; D009532:Nickel; D007501:Iron