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Statut |
Confirmé |
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Série |
SEM-BESSON |
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Domaines |
cond-mat |
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Date |
Lundi 26 Novembre 2012 |
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Heure |
10:30 |
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Institut |
IMPMC |
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Salle |
Salle de Conférence, 4ème étage, Tour 22-23,UPMC, 4, Place Jussieu |
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Nom de l'orateur |
Van Schooneveld |
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Prenom de l'orateur |
Matti |
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Addresse email de l'orateur |
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Institution de l'orateur |
Debye Institute of Nanomaterials Research, Utrecht University, Netherlands |
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Titre |
2p3d resonant x-ray emission of cobalt bearing nanoparticles |
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Résumé |
Metal and metal oxide nanoparticles play a big role in nanotechnology and catalysis, but their valence interactions are difficult to probe. Here I will show that 2p3d resonant x-ray emission spectroscopy (RXES) is highly sensitive to 3d-3d excitations and the ligand field, that low energy (0.1 eV above ground state) excitations are experimentally accessible, and that 2p3d RXES can be used as a highly surface sensitive tool on metallic substrates. The discussed data include molecular cobalt complexes, cobalt monoxide single and nanocrystals and cobalt-nickel metallic nanoparticles. The data were obtained at the ADRESS beamline of the Swiss Light Source (SLS) and interpreted with crystal field multiplet (CFM) and density functional theory (DFT) codes. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
- seminVan-SCHOONEVELD-2012.pdf (119125 bytes)
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