材料期刊网

The structural and magnetic properties of RFe(10)Mo(2) and RFe(10)Mo(2)N have been studied by x-ray diffraction and high-field magnetization measurements on free-powder or magnetically aligned samples. The lattice of RFe(10)Mo(2) expands anisotropically upon nitrogenation and the volume of the unit cell increases by 2.9-4.0%. The rare-earth element dependence of lattice expansion is found to be just opposite to that of the Curie temperature. The saturation magnetization of RFe(10)Mo(2) increases after the introduction of nitrogen. The abnormally large values of magnetization for some heavy-rare-earth compounds imply that a non-collinear moment configuration in the absence of an external field may exist in these compounds.