Eur. Phys. J. B 23, 441-448 (2001)
https://doi.org/10.1007/s100510170035

Soft X-ray magnetic circular dichroism in Fe and Fe_0.50Co_0.48V_0.02 films: quantitative analysis of transmission

¹ Laboratory for Neutron Scattering, ETH& PSI, 5232 Villigen PSI, Switzerland
² Laboratory of Crystallography, ETH Zentrum, Sonnegstrasse 5, 8092 Zurich, Switzerland
³ BESSY, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
⁴ Department of Physics, Uppsala University, Box 530, 75121 Uppsala, Sweden

Corresponding author: ^a Oksana.Zaharko@psi.ch

Received: 15 August 2000
Revised: 11 June 2001
Published online: 15 October 2001

Abstract

Magnetic circular dichroism (MCD) in X-ray absorption has been measured at the edges of Fe in ex-situ grown Fe and films by means of the transmission method. A new approach is developed for fitting the observed transmittance, which describes the resonance lineshapes as (generalized) Fano profiles. Analytical integration of each single resonance allows a more reliable determination of the orbital and spin magnetic moments based on the MCD sum rules. The results are consistent with an increase of the Fe spin and orbital magnetic moment in Fe-Co alloys as obtained by other experiments and band structure calculations.