Electrical resistivity studies of Dy(Fe1−x Co x )2 compounds

Abstract: Electrical resistivities of the Dy(Fe1−x Co x )2 intermetallic series were measured in a wide temperature region and the residual, phonon and magnetic contributions to the resistivities across the series were determined. The magnetic ordering temperatures were estimated for the Dy(Fe1−x Co x )2 compounds using the magnetic contribution to the electrical resistivity. The splitting energies between the 3d subbands of iron for the Dy(Fe1−x Co x )2 series were estimated using the magnetic hyperfine fields at 57Fe nuclei. The Curie temperatures obtained for the Dy(Fe1−x Co x )2 intermetallics and the Curie temperatures reported in the literature for the Dy(Mn1−x Fe x )2 and Dy(Mn0.4−x Al x Fe0.6)2 series correlate linearly with the squared energy splitting between the 3d subbands. [Copyright &y& Elsevier]