Volume 42, Number 3, May I 1998
|Page(s)||295 - 300|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Theoretical and experimental investigations on the magnetic EXAFS at the K- and -edges of bcc-Fe
Institut für Physikalische Chemie,
Universität München, Theresienstr. 37,
D-80333 München, Germany
2 Lehrstuhl für Experimentalphysik IV, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
3 Institüt für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
Accepted: 13 March 1998
A fully relativistic theoretical description of magnetic EXAFS (MEXAFS) is presented that has been set up in the framework of relativistic multiple-scattering theory on the basis of the Dirac equation for spin-polarised, magnetic solids. This approach is applied to supply a detailed interpretation of new and very accurate experimental data for the K- and -edges of bcc-Fe that have been recorded for photon energies up to 600 eV above the Fermi level. In particular it is demonstrated that the MEXAFS spectra can be interpreted on the basis of the so-called sum rules.
PACS: 71.15.Rf – Relativistic effects / 75.10.Lp – Band and itinerant models / 78.70.Dm – X-ray absorption spectra
© EDP Sciences, 1998
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