NUKLEONIKA 2004, 49(Supplement 3):s85-s88

MÖSSBAUER EFFECT STUDIES OF Dy(Fe0.7-xNixCo0.3)2 INTERMETALLICS

Agata Jabłońska1, Jan Suwalski1, Jarosław Pszczoła2, Piotr Guzdek2, Paweł Stoch2, Antoni Pańta3

1 Institute of Atomic Energy, 05-400 Otwock-Świerk, Poland,
2 Solid State Physics Department, AGH University of Science and Technology, 30 A. Mickiewicza Ave., 30-059 Kraków, Poland,
3 Department of Metallurgy and Materials Engineering, AGH University of Science and Technology, 30 A. Mickiewicza Ave., 30-059 Kraków, Poland

A consequence of the Fe/Ni substitution in the series of Dy(Fe0.7-xNixCo0.3)2 was studied in the presented paper. The synthesis and X-ray analysis (300 K) of the Dy(Fe0.7-xNixCo0.3)2 system were performed. The cubic, MgCu2-type, Fd3m crystal structure was evidenced for this solid solution. 57Fe Mössbauer effect measurements for the system were carried out at 77 K. The obtained crystallographic lattice parameters and the hyperfine interaction data are presented. The magnetic hyperfine field values form a separate branch of the Slater-Pauling curve situated above the branch corresponding to the Dy(Fe1-xCox)2 intermetallics.