NUKLEONIKA 2007, 52(Supplement 1):S59-S61

CRYSTAL STRUCTURE AND MÖSSBAUER EFFECT STUDIES OF Gd(Mn1-xFex)2 AND COMPOUNDS Gd(Fe1-xCox)2 INTERMETALLICS

Marek Onak1, Piotr Guzdek1, Jarosław Pszczoła1, Paweł Stoch2, Agata Jabłońska2, Jan Suwalski2, Antoni Pańta3

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

X-ray crystal structure (300 K) and 57Fe Mössbauer effect (77 K) studies were performed for the Gd(Mn1-xFex)2 and Gd(Fe1-xCox)2 compounds. The crystal lattice parameter decreases vs. an average number of 3d electrons. The magnetic hyperfine field treated as a function of the average number of 3d electrons forms a Slater-Pauling type dependence. This dependence is related to the 3d-electron band structure within the frame of the rigid band model.