[en] The formation and magnetic properties of a novel intermetallic Sm₃(Fe_0.933Ti_0.067)₂₉ compound and the Sm₃(Fe_0.933Ti_0.067)₂₉N_y (y=5) nitride have been investigated. The x-ray diffraction patterns of the nitride and the parent compound were indexed on the basis of the Nd₃(Fe,Ti)₂₉-type structure with monoclinic symmetry. The parent and the nitride exhibit ferromagnetic ordering with a Curie temperature T_C of 486 K for the parent and 750 K for the nitride. Introduction of nitrogen led to an increase in saturation magnetization; M_s for the nitride is 160 A m² kg^-1 at 4.2 K and 140 A m² kg^-1 at 293 K. The nitride has a uniaxial anisotropy with an anisotropy field strength B_a for 25 T at 4.2 K and 12.8 T at 293 K. The coercivity μ_0iH_c=0.83 T at 293 K for this new nitride has been determined. (author)