Journal of magnetism and magnetic materials vol:148 issue:1-2 pages:93-94
The hyperfine interaction of thin body centered cubic Fe layers with various thicknesses (2 to 9 monolayers) epitaxially deposited at 293 K on MgO(001) was measured in UHV with Fe-57 integral conversion electron Mossbauer spectroscopy. The thinnest Fe layer is found to be paramagnetic at room temperature while with increasing layer thickness a resolved magnetic interaction is observed. These results are interpreted in terms of a three dimensional growth mode of Fe on MgO and are complemented with in situ RHEED observations. The magnetic component is oriented in the plane of the sample.