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

Autor: Ohresser, P., Otero, E., Wilhelm, F., Rogalev, A., Goyhenex, C., Joly, L., Bulou, H., Romeo, M., Speisser, V., Arabski, J., Schull, G., Scheurer, F.
Předmět:
Zdroj: Journal of Applied Physics; Dec2013, Vol. 114 Issue 22, p223912, 4p, 1 Color Photograph, 3 Charts, 1 Graph
Abstrakt: 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index