6533b837fe1ef96bd12a29a6

RESEARCH PRODUCT

Microstructure and magnetic properties of colloidal cobalt nano-clusters

A. García PrietoM.l. Fdez-gubiedaV. Turco LiveriGiovanni CapelliniT. NeisiusAlessandro LongoSettimio MobilioAngela RuggirelloR. TorchioJavier AlonsoCarlo Meneghini

subject

Materials scienceAbsorption spectroscopyMagnetismchemistry.chemical_elementNanoparticleNanotechnologyCondensed Matter PhysicsMicrostructureElectronic Optical and Magnetic MaterialsX-ray absorption fine structureMagnetizationchemistryTransmission electron microscopyCobalthuman activities

description

The magnetic response of nanometer sized Co nanoparticles (NP) prepared using reverse micelle solutions are presented. The use of complementary structural and morphological probes (like transmission electron microscopy, high resolution electron microscopy, X-ray absorption spectroscopy) allowed to relate the magnetic properties to the size, morphology, composition and atomic structure of the nanoparticles. All data agree on the presence of a coreshell structure of NPs made of a metallic Co core surrounded by a thin Co-oxide layer. The coreshell microstructure of NPs affects its magnetic response mainly raising the anisotropy constant. (C) 2010 Elsevier B.V. All rights reserved.

yearjournalcountryeditionlanguage
2010-11-01
10.1016/j.jmmm.2010.07.008https://hdl.handle.net/11590/114351