Loss of single-molecule-magnet behavior of a Mn-12-based compound assembled in a monolayer.
Fiche publication
Date publication
janvier 2010
Auteurs
Membres identifiés du Cancéropôle Est :
Dr GALLANI Jean-Louis
Tous les auteurs :
Grumbach N, Barla A, Joly L, Donnio B, Rogez G, Terazzi E, Kappler JP, Gallani JL
Lien Pubmed
Résumé
Magnetic circular dichroism magnetization measurements on a monolayer of single molecule magnets have been performed and the results are presented. At the measurement temperature (2 K) the hysteresis cycle shows no opening, contrary to what is seen in the bulk with SQUID magnetometry. This result could surprisingly imply that XMCD is unsuited for such measurements given the fact that it excites the core electrons at the origin of the magnetism. This result could also mean that the blocking temperature is greatly decreased or that these molecules loose their hallmark when deposited as adsorbed films, precluding therefore their much sought-after use in magnetic memories.
Référence
Eur Phys J B. 2010 Jan;73(1):103-8.