The magnetic response of nanometer sized Co nanoparticles (NP) prepared using reverse micellesolutions are presented. The use of complementary structural and morphological probes (liketransmission electron microscopy, high resolution electron microscopy, X-ray absorption spectroscopy)allowed to relate the magnetic properties to the size, morphology, composition and atomic structure ofthe nanoparticles. All data agree on the presence of a core–shell structure of NPs made of a metallic Cocore surrounded by a thin Co-oxide layer. The core–shell microstructure of NPs affects its magneticresponse mainly raising the anisotropy constant.
|Number of pages||7|
|Journal||Journal of Magnetism and Magnetic Materials|
|Publication status||Published - 2010|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics