Abstract
In this paper we discuss the specific features of K-edge magnetic circular x-ray-dichroism (MCXD) spectra of Fe and Co in bcc Fe-Co alloys and Fe/Co multilayers. In the alloys, the systematic variations of shape and amplitude of the near-edge MCXD signals as a function of concentration can be correlated with the changes in local atomic environment. The difference between the Co K-edge and Fe K-edge spectra of the same alloy shows that the signal is central atom dependent. Well above the absorption edge (E-E0>80 eV) the extended x-ray-absorption fine structure (EXAFS)-like oscillations in the MCXD spectra clearly reflect the local bcc structure and appear not to depend on the absorbing atom. In both alloys and multilayers, the magnetic EXAFS intensity can be correlated to the average magnetization in the neighborhood of the absorbing atom.
| Original language | English |
|---|---|
| Pages (from-to) | 3779-3788 |
| Number of pages | 10 |
| Journal | Physical Review B |
| Volume | 50 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Jan 1994 |
| Externally published | Yes |