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Magnetic properties of self-assembled Co clusters on Au(111) below the ferromagnetic phase transition
| Content Provider | Scilit |
|---|---|
| Author | Dudzik, E. Dürr, H. A. Dhesi, S. S. Laan, Gerrit Van Der Knabben, D. Goedkoop, J. B. |
| Copyright Year | 1999 |
| Description | Journal: Journal of Physics: Condensed Matter We report on the magnetic properties of Co clusters grown on Au(111) in the cluster-size range from 300 to 12000 atoms. These clusters are superparamagnetic at room temperature, while at low temperatures blocking of the thermal fluctuations leads to a macroscopic remanence. The hysteresis curves measured in situ by means of x-ray magnetic circular dichroism show that the blocking temperature scales with cluster size, following a finite-size scaling power-law behaviour. We find that the blocking temperature of these clusters is substantially reduced by a thin silver overlayer, indicating a reduction in the perpendicular magnetic anisotropy at low coverages. With this change in anisotropy a clear change in the shift exponent can be observed. |
| Related Links | http://iopscience.iop.org/article/10.1088/0953-8984/11/43/307/pdf |
| Ending Page | 8451 |
| Page Count | 7 |
| Starting Page | 8445 |
| ISSN | 09538984 |
| e-ISSN | 1361648X |
| DOI | 10.1088/0953-8984/11/43/307 |
| Journal | Journal of Physics: Condensed Matter |
| Issue Number | 43 |
| Volume Number | 11 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1999-10-15 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics: Condensed Matter Applied Physics X Ray Magnetic Circular Dichroism Room Temperature Magnetic Properties Phase Transition Power Law Magnetic Anisotropy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Materials Science |
