Magnetism of CoPd self-organized alloy clusters on Au(111) | Zendy

Philippe Ohresser | Zendy; Edwige Otero | Zendy; F. Wilhelm | Zendy; А. Рогалев | Zendy; C. Goyhenex | Zendy; L. Joly | Zendy; Hervé Bulou | Zendy; Michelangelo Romeo | Zendy; Virginie Speisser | Zendy; J. Arabski | Zendy; Guillaume Schull | Zendy; Fabrice Scheurer | Zendy

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Magnetism of CoPd self-organized alloy clusters on Au(111)

Author(s) -

Philippe Ohresser,

Edwige Otero,

F. Wilhelm,

А. Рогалев,

C. Goyhenex,

L. Joly,

Hervé Bulou,

Michelangelo Romeo,

Virginie Speisser,

J. Arabski,

Guillaume Schull,

Fabrice Scheurer

Publication year - 2013

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.4846796

Subject(s) - magnetic circular dichroism , condensed matter physics , magnetic moment , magnetism , superparamagnetism , magnetic anisotropy , materials science , anisotropy , alloy , magnetization , ferromagnetism , magnetic field , physics , metallurgy , spectral line , optics , quantum mechanics , astronomy

Magnetic properties of gold-encapsulated CoxPd1−x self-organized nano-clusters on Au(111) are analyzed by x-ray magnetic circular dichroism for x = 0.5, 0.7, and 1.0. The clusters are superparamagnetic with a blocking temperature decreasing with increasing Pd concentration, due to a reduction of the out-of-plane anisotropy strength. No magnetic moment is detected on Pd in these clusters, within the detection limit, contrary to thick CoPd films. Both reduction of anisotropy and vanishing Pd moment are attributed to strain.

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