Mossbauer effect studies of Dy(Fe0.7-xNixCo0.3)2 intermetallics

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-xNxCo0.3)(2) system were performed. The cubic, MgCu2-type, Fd3m crystal structure was evidenced for this solid solution. Fe-57 Mossbauer 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.