| Issue |
J. Phys. IV France
Volume 7, Number C2, Avril 1997
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
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| Page(s) | C2-443 - C2-444 | |
| DOI | https://doi.org/10.1051/jp4/1997043 | |
J. Phys. IV France 7 (1997) C2-443-C2-444
DOI: 10.1051/jp4/1997043
Induced Copper Magnetism in Permalloy-Copper Bilayers
M. Belakhovsky1, B. Gilles1, P. Kamp1, A. Marty1, J.B. Goedkoop2 and N.B. Brookes21 Département de Recherche Fondamentale sur la Matière Condensée, Service de Physique des Matériaux et Microstructures, CEA/Grenoble, 17 rue des Martyrs, 38054 Grenoble cedex 9, France
2 European Synchrotron Radiation Facility (ESRF), avenue des Martyrs, BP. 220, 38043 Grenoble cedex, France
Abstract
We have performed dichroic measurements at the L2,3 edges of the 3 elements Ni, Fe and Cu on the ESRF beam
line BL26 (« Circular Polarisation »). The samples were Ni0.8Fe0.2 /Cu bilayers elaborated by molecular beam epitaxy. The
Cu spectra show a dichroic effect, which decreases regularly as a function of Cu spacer thickness. A significant orbital
contribution is present, and the application of the sum rules leads to a ratio of orbital to spin magnetic moments for the Cu d
electrons : ML /MS = 0 . 14±0.01, 0.21±0.02, 0.38±0.03 (respectively for .2, .4 and .6 nm of Cu). These measurements, which
contrast with the CoCu case [4], also exemplify the high potential of ESRF for XMCD experiments ( few atomic layers and
tiny induced dichroism).
© EDP Sciences 1997