Mössbauer study of amorphous alloys Fe85–xCrxB15 (x = 0–20)
Mössbauer spectra of amorphous alloys Fe85–xCrxB15 (x = 0–20) are measured at 91 K. Distributions of 57Fe hyperfine fields are recovered from the experimental spectra. The data are analyzed using a nanocrystal model. It is found that atoms of chrome replace iron atoms in nanocrystals of type α-Fe with orthorhombic o-Fe3B and tetragonal Fe3B phases. The local magnetic moments of iron atoms in the nanocrystal phases are estimated. Replacing iron atoms with atoms of chrome sharply reduces the local magnetic moments of iron atoms in nanocrystals of amorphous alloys.