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27 April 2024

» arxiv » 1107.2571

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Magnetism of cobalt nanoclusters on graphene on iridium
Chi Vo-Van ; Stefan Schumacher ; Johann Coraux ; Violetta Sessi ; Olivier Fruchart ; Nick B. Brookes ; Philippe Ohresser ; Thomas Michely ;
Date:	13 Jul 2011
Abstract:	The structure and magnetic properties of Co clusters, comprising from 26 to 2700 atoms, self-organized or not on the graphene/Ir(111) moir’e, were studied in situ with the help of scanning tunneling microscopy and X-ray magnetic circular dichroism. Surprisingly the small clusters have almost no magnetic anisotropy. We find indication for a magnetic coupling between the clusters. Experiments have to be performed carefully so as to avoid cluster damage by the soft X-rays.
Source:	arXiv, 1107.2571
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