Volume 65, Number 4, February 2004
|Page(s)||560 - 566|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 February 2004|
Direct observation of the interlayer exchange coupling mechanism in a magnetic  multilayer
Institut für Festkörperforschung, Forschungszentrum Jülich - 52425 Jülich, Germany
2 Ames Laboratory-US DOE and Department of Physics and Astronomy Iowa State University - Ames, IO 50011, USA
3 Institute Laue-Langevin - BP 156, F-38042 Grenoble Cedex 9, France
Accepted: 3 December 2003
Proximity effects in an  superlattice lead to the formation of new magnetic phases. Modulated magnetic order, expected for pure , and ferromagnetic order, expected for pure , coexist at low temperatures. Employing X-ray resonance exchange scattering, we could probe directly the respective spin polarisations of the conduction band electrons, providing a mechanism for the interlayer coupling. The different anisotropies of and compete with this tendency to long-range magnetic order, leading to substantial thermal-hysteresis effects.
PACS: 75.75.+a – Magnetic properties of nanostructures / 75.25.+z – Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source X-ray scattering, etc.) / 61.18.Fs – Magnetic resonance techniques; Mössbauer spectroscopy
© EDP Sciences, 2004
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