MAGNETIC-PROPERTIES OF A NOVEL SM-3(FE, TI)(29) PHASE

In a systematic study of the Sm10Fe85Tix (4.7 < x < 6.5) alloys, the Sm-3(Fe, Ti)(29) compound has been found to be a new phase, of which the structure is Nd-3(Fe, Ti)(29)-type. The X-ray diffraction pattern of Sm-3(Fe0.933Ti0.067)(29) can be indexed on the monoclinic symmetry with the lattice parameters a = 1.065 nm, b = 0.858 nm, c = 0.972 nm and beta = 96.98 degrees. The Sm3(Fe0.933Ti0.067)(29) compound exhibits ferromagnetic ordering with a Curie temperature T-c = 486 K. The saturation magnetization M(s) is 125 A m(2)/kg at 77 K and 119 A m(2)/kg at room temperature. The room temperature anisotropy field is 3.4 T.