X-ray emission and absorption in intermetallic compounds: FeAl and FeRh

The authors describe a procedure to calculate the X-ray spectra of the intermetallic compounds FeAl and FeRh with the aid of the ab initio self-consistent band structures obtained by the method of linear muffin-tin orbitals (LMTO). The oscillator strengths are properly calculated by using the LMTO. The calculated X-ray spectra of FeAl compare well with other theoretical and experimental data. The X-ray spectra of Fe-Rh in three magnetic phases have been obtained for the first time. The particular features of these spectra in each phase have been laid out to distinguish one magnetic phase from another.