| NUKLEONIKA 2003, 48(Supplement 1):s85-s88
HYPERFINE FIELDS AND MAGNETOELASTIC SURFACE EFFECTS
IN Fe72Cu1.5Nb4Si13.5B9 NANOCRYSTALLINE ALLOY
Tadeusz Szumiata1, Michał Gawroński1, Bogumił Górka1, Katarzyna Brzózka1,
Javier S. Blázquez-Gámez2, Tadeusz Kulik3, Ryszard Żuberek4,
Anna Ślawska-Waniewska4
1 Department of Physics, Technical University of Radom,
29 Malczewskiego Str., 26-600 Radom, Poland
2 Departamento de Física de la Materia Condensada, Universidad de Sevilla,
Ap. 1065, 41080 Sevilla, Spain
3 Warsaw University of Technology, Faculty of Materials Science and Engineering,
141 Wołoska Str., 02-507 Warsaw, Poland
4 Institute of Physics, Polish Academy of Sciences, 32 Lotników Ave., 02-668 Warsaw, Poland
In this work hyperfine fields of two-phase nanocrystalline Fe72Cu1.5Nb4Si13.5B9 alloys were studied in order to verify the existence of surface effects. To obtain a series of nanocrystalline samples with small grains of different sizes, a special non-isothermal annealing procedure of an initially amorphous ribbon was applied. In the case of samples with a significant amount of crystallites, a high field (about 27.5 T) component of continuous part of the hyperfine field distribution was found that could be attributed to boundary regions between the grains and rest of the sample. The existence of the surface effects was confirmed in the magnetostrictive experiment.
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