The dysprosium-transition-metal interaction in Dy(Co,Ni)10Si2 compounds

Abstract The magnetization of DyCo 10− x Ni x Si 2 compounds with x = 0, 2, 4 and 6 has been measured at 4.2 K in magnetic fields up to 38 T and between 4.2 K and room temperature in fields up to 5 T on single-crystalline powder particles which were free to be oriented by the applied field. The strength of the magnetic coupling between the Dy sublattice and the transition-metal sublattice is derived from the high-field magnetization at 4.2 K and, for the compounds with x = 4, also from the field-dependence of the magnetization at the compensation temperature. The results are discussed.