Abstrakt
Magnetic hyperfine fields of Fe90Zr7B3 Nanoperm nanocrystalline alloy are characterized by 57Fe Mössbauer spectrometry and 57Fe NMR as well as by magnetic force microscopy. 57Fe NMR enables to distinguish a broad signal of iron atoms located in a residual amorphous matrix from a narrow one which belongs to Fe in nanograins. The former coincides with the distribution of hyperfine fields obtained from 57Fe Mössbauer spectroscopy.
In addition, it is possible to make a distinction between NMR signals of the Fe nanograins located in magnetic domains from that of the nanograins positioned in domain walls. This is confirmed by magnetic force microscopy where appearance of maze-domains is observed.