57-Fe Mössbauer spectroscopy (MS)
Conversion electron Mössbauer spectroscopy is mainly used for the analysis of phase formation after ion implantation. A high surface layer sensitivity is reached with the conversion electrons. The information depth amounts maximal to some 100 nm with this technique. Iron can be constituent of the bulk (Fraction of 57-Fe in the natural isotope mixture is about 2.2 %) or can be implanted as probe atom.
Conventional Mössbauer spectroscopy in transmission geometry is utilized for the investigation of oxidation processes in minerals or for the determination of the oxidation state of iron in different compounds.
The evaluation of the spectra is performed with the NORMOS computer program of R. Brand (University Duisburg).