ACTA

Magnetic Hyperfine Fields of Nanoperm Alloys

M. Miglierini^a,b, J. Kohout^c, A. Lančok^d and K. Šafářová^b
^aSlovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovakia
^bRegional Centre of Advance Technologies and Materials, Palacky University, Šlechtitelů 11, 771 46 Olomouc, Czech Republic
^cFaculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague, Czech Republic
^dInstitute of Inorganic Chemistry of the AS CR, v. v. i., 250 68 Husinec-Řež 1001, Czech Republic

Full Text PDF

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.

DOI: 10.12693/APhysPolA.121.1263
PACS numbers: 75.50.Tt, 75.75.-c, 76.80.+y, 76.60.-k, 68.37.Rt