The influence of the interlayer exchange coupling on the magnetism of an Fe(0 0 1) monolayer

• Published in: Surface science Vol. 601; no. 18; pp. 4300 - 4304
• Main Authors: Ślęzak, T., Ślęzak, M., Matlak, K., Rohlsberger, R., L’Abbe, C., Rüffer, R., Spiridis, N., Zając, M., Korecki, J.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Lausanne Elsevier B.V 15.09.2007; Amsterdam Elsevier Science; New York, NY
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Curie temperature; Epitaxy; Exact sciences and technology; Interlayer exchange coupling; Mössbauer spectroscopy; Physics; Synchrotron radiation; Interlayer exchange coupling; Epitaxy; Synchrotron radiation; Mössbauer spectroscopy; Curie temperature; Curie point; Moessbauer spectroscopy; Iron; Magnetism; Exchange interactions
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/j.susc.2007.04.138

We investigated changes in the magnetic properties of a single Fe monolayer on Au(0 0 1) induced by the interlayer exchange coupling (IEC) to FeAu monoatomic superlattices. The grazing incidence nuclear resonant scattering of X-rays (GI-NRS) combined with the 57Fe probe layer concept allowed us to selectively monitor the local structure and magnetism of the Fe(0 0 1) monolayer in a coupled state. The dependence of the monolayer hyperfine parameters on temperature and spacer thickness was determined from the fitted GI-NRS time spectra, collected for the selected thickness of the stepped Au spacer. The influence of the coupling on the hyperfine magnetic field B HF was negligible at temperatures much lower than T C of the uncoupled Fe monolayer ( T C = 210 K as checked by MOKE). The analysis of the time-spectra accumulated at 200 K showed a non-monotonous dependence of the average B HF as a function of the spacer thickness, related to IEC oscillations. The maximum influence of IEC on B HF (13 T) was found for the 4 ML Au spacer.