Abstract
The magnetic properties of Fe nanostructured films have been studied using magnetic linear and circular dichroism in x-ray photoemission spectroscopy. The samples were prepared by the deposition of nanoscale Fe clusters, size 1–4 nm, onto thin Cu films. The linear dichroism, which is used to measure the in-plane magnetization, increases with increasing film thickness, with a sharp increase between 1 and 1.5 ML coverage. The circular dichroism, which measures the out-of-plane magnetization, is zero within the experimental error at all thicknesses studied. Capping an Fe film with an ultrathin Pd layer results in a factor of 3 decrease of the linear dichroism response.
Highlights
Magnetism is strongly sensitive to atomic-scale changes in symmetry, coordination, and confinement
Magnetic dichroism in x-ray photoemission spectroscopyXPSis a powerful tool for the study of nanostructured surfaces, probing the electronic structure and the magnetic properties simultaneously.[6,7]
The experiments are usually performed with a finite angular acceptance, and are referred to as either magnetic linear or circular dichroism in angular distributions of photoelectronsMLDAD or MCDAD
Summary
K. W. Edmonds, C. Binns,a) S. H. Baker, and S. C. Thornton Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, United Kingdom P. Finetti CLRC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, United KingdomReceived 7 February 2000; accepted for publication 13 June 2000͒
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