J. Phys. IV France 7 (1997) C2-435-C2-436
Hard-XMCD and Magnetic EXAFS in the Multiple Scattering ApproachCh. Giorgetti1, E. Dartyge1, Ch. Brouder2, M. Alouani3 and F. Baudele4
1 LURE, bâtiment 209d, Centre Universitaire, 91405 Orsay cedex, France
2 LMCP, tour 16, 4 place Jussieu, 75252 Paris cedex 05, France
3 Department of Physics, The Ohio State University, Columbus, Ohio 43210, U.S.A.
4 LPS de Nancy, BP. 239, 54506 Vandoeuvre-lès-Nancy, France
We simulated X-ray Magnetic Circular Dichroism and magnetic EXAFS at the LIII edges of Rare Earths (RE) in some REFe2 intermetallic alloys within the full multiple-scattering approach. The up and down potentials were obtained by means of a linearmuffin- tin orbital method. To test the influence of 4f electrons, whose very large role at the L edges of RE is now well known, we chose Lu which has no 4f magnetic moment, Gd which has no 4f orbital momentum and Er which has a strong 4f orbital momentum. The edge and EXAFS regions are investigated. We compare the calculations with measurements.
© EDP Sciences 1997