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Spin and orbital magnetic moments of deposited small iron clusters studied by x-ray magnetic circular dichroism spectroscopy
| Content Provider | Scilit |
|---|---|
| Author | Lau, J. T. Föhlisch, A. Martins, Michael Nietubyć, Robert Reif, M. Wurth, W. |
| Copyright Year | 2002 |
| Description | Journal: New Journal of Physics The size-dependent magnetic properties of small iron clusters deposited on ultrathin Ni/Cu(100) films have been studied with circularly polarized synchrotron radiation. For x-ray magnetic circular dichroism studies, the magnetic moments of size-selected clusters were aligned perpendicular to the sample surface. Exchange coupling of the clusters to the ultrathin Ni/Cu(100) film determines the orientation of their magnetic moments. All clusters are coupled ferromagnetically to the underlayer. With the use of sum rules, orbital and spin magnetic moments as well as their ratios have been extracted from x-ray magnetic circular dichroism spectra. The ratio of orbital to spin magnetic moments varies considerably as a function of cluster size, reflecting the dependence of magnetic properties on cluster size and geometry. These variations can be explained in terms of a strongly size-dependent orbital moment. Both orbital and spin magnetic moments are significantly enhanced in small clusters as compared to bulk iron, although this effect is more pronounced for the orbital moment. Magnetic properties of deposited clusters are governed by the interplay of cluster-specific properties on the one hand and cluster-substrate interactions on the other hand. Size dependent variations of magnetic moments are modified upon contact with the substrate. |
| Related Links | http://iopscience.iop.org/article/10.1088/1367-2630/4/1/398/pdf |
| Ending Page | 98 |
| Page Count | 1 |
| Starting Page | 98 |
| e-ISSN | 13672630 |
| DOI | 10.1088/1367-2630/4/1/398 |
| Journal | New Journal of Physics |
| Issue Number | 1 |
| Volume Number | 4 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2002-12-12 |
| Access Restriction | Open |
| Subject Keyword | Journal: New Journal of Physics Applied Physics Condensed Matter Physics X Ray Magnetic Circular Dichroism Synchrotron Radiation Magnetic Moment Magnetic Properties |
| Content Type | Text |
| Resource Type | Article |
