FE-57 MOSSBAUER-EFFECT STUDIES ON THE MAGNETISM OF IRON-RICH BCC, FCC AND HCP PHASES OF FE-100-CMNC

Iron-rich Fe100-cMnc-alloys (0 < c(Mn) < 35 at%) are found in three different phase structures depending on manganese concentration: bcc, fcc and hcp. Mossbauer effect studies on these phases reveal different magnetic properties: ferromagnetism, antiferromagnetism and paramagnetism. The evaluation of poorly resolved Mossbauer spectra of a sample with FeNi-Invar analogous composition (c(Mn) = 35%) and coexisting fcc and hcp phases was possible with the help of the Afanas'ev-Tsymbal sharpening method introduced recently [2,3].