Abstract
Conversion electron Mössbauer spectroscopy (CEMS) was applied to model the buried interfaces in epitaxial 1–14 monolayer (ML) Fe(001) films sandwiched between Cr(001) layers. The local arrangement of Fe and Cr was derived by analysis of the experimental hyperfine field distributions determined from 80K CEMS spectra. A discontinuity in magnetic properties for the 6ML Fe film suggests that a modification of the magnetic structure occurs at this thickness. The 57Fe probe layer analysis showed that Cr/Fe and Fe/Cr interfaces are non-equivalent. The lower interface showed up to be smoother than the upper one. The Fe concentration profile obtained form the CEMS analysis displayed a considerable interface Fe–Cr alloying for films deposited at the room temperature.
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