We present a comprehensive study of the magnetism and morphology of an ultrahigh density array of Co nanoclusters self-assembled on the single atomic layer GdAu2 on Au(111) template surface. Combining scanning tunneling microscopy, x-ray magnetic circular dichroism, and magneto-optical Kerr effect measurements, we reveal a significant enhancement of the perpendicular magnetic anisotropy energy for noncoalesced single atomic layer nanoclusters compared to Co/Au(111). For coverages well beyond the onset of coalescence, we observe room-temperature in-plane magnetic remanence.
Magnetism and morphology of Co nanocluster superlattices on GdAu2 /Au(111)- (13×13) / Cavallin, A.; Fernández, L.; Ilyn, M.; Magaña, A.; Ormaza, M.; Matena, M.; Vitali, L.; Ortega, J. E.; Grazioli, Cesare; Ohresser, P.; Rusponi, S.; Brune, H.; Schiller, F.. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 90:23(2014), pp. 235419.235419-1-235419.235419-6. [10.1103/PhysRevB.90.235419]
Magnetism and morphology of Co nanocluster superlattices on GdAu2 /Au(111)- (13×13)
GRAZIOLI, CESARE;
2014-01-01
Abstract
We present a comprehensive study of the magnetism and morphology of an ultrahigh density array of Co nanoclusters self-assembled on the single atomic layer GdAu2 on Au(111) template surface. Combining scanning tunneling microscopy, x-ray magnetic circular dichroism, and magneto-optical Kerr effect measurements, we reveal a significant enhancement of the perpendicular magnetic anisotropy energy for noncoalesced single atomic layer nanoclusters compared to Co/Au(111). For coverages well beyond the onset of coalescence, we observe room-temperature in-plane magnetic remanence.Pubblicazioni consigliate
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