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Arnaud Hillion
Researcher at University of Lyon
Publications - 22
Citations - 375
Arnaud Hillion is an academic researcher from University of Lyon. The author has contributed to research in topics: Magnetic anisotropy & Magnetic nanoparticles. The author has an hindex of 10, co-authored 20 publications receiving 308 citations. Previous affiliations of Arnaud Hillion include Centre national de la recherche scientifique.
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Journal ArticleDOI
Nontrivial Redox Behavior of Nanosized Cobalt: New Insights from Ambient Pressure X-ray Photoelectron and Absorption Spectroscopies
Vasiliki Papaefthimiou,Thierry Dintzer,Véronique Dupuis,Alexandre Tamion,Florent Tournus,Arnaud Hillion,Detre Teschner,Michael Hävecker,Axel Knop-Gericke,Robert Schlögl,Spyridon Zafeiratos +10 more
TL;DR: It was found that cobalt nanoparticles are readily oxidized to a distinct CoO phase, which is significantly more stable to further oxidation or reduction compared to the thick oxide films formed on the Co(0001) crystal.
Journal ArticleDOI
Low Temperature Ferromagnetism in Chemically Ordered FeRh Nanocrystals
Arnaud Hillion,A. Cavallin,Sergio Vlaic,Alexandre Tamion,Florent Tournus,Ghassan Khadra,Jan Dreiser,Cinthia Piamonteze,Frithjof Nolting,Stefano Rusponi,Kazuhisa Sato,Toyohiko J. Konno,Olivier Proux,Véronique Dupuis,Harald Brune +14 more
TL;DR: X-ray magnetic dichroism and superconducting quantum interference device measurements demonstrate ferromagnetic alignment of the Fe and Rh magnetic moments of 3 and 1μ(B), respectively.
Journal ArticleDOI
Efficient hysteresis loop simulations of nanoparticle assemblies beyond the uniaxial anisotropy
Alexandre Tamion,Edgar Bonet,Florent Tournus,Cécile Raufast,Arnaud Hillion,Oksana Gaier,Véronique Dupuis +6 more
Journal ArticleDOI
Advanced magnetic anisotropy determination through isothermal remanent magnetization of nanoparticles
Arnaud Hillion,Alexandre Tamion,Florent Tournus,O. Gaier,E. Bonet,Clément Albin,Véronique Dupuis +6 more
TL;DR: In this article, a theoretical framework for the simulation of isothermal remanence magnetization (IRM) curves, based on the Stoner-Wohlfarth model combined with the N\'eel macrospin relaxation time description, is proposed.
Journal ArticleDOI
Magnetic moments in chemically ordered mass-selected CoPt and FePt clusters
Véronique Dupuis,Ghassan Khadra,Sébastien Linas,Arnaud Hillion,L. Gragnaniello,Alexandre Tamion,J. Tuaillon-Combes,L. Bardotti,Florent Tournus,Edwige Otero,Philippe Ohresser,Andrei Rogalev,Fabrice Wilhelm +12 more
TL;DR: In this article, the magnetism of CoPt and FePt clusters before and after their transition to the chemically ordered L1(0)-like phase was studied using X-ray magnetic circular dichroism (XMCD).