Neutron Diffraction Investigations of (CoMn)_1−xFe_x

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The spin structure and the atomic ordering of fcc (CoMn)_1−xFe_x have been investigated by powdered and the single crystals. The spin structure was determined to be similar to that of γ-Fe, where the inclination angle of spins and the temperature dependence of the sublattice moment were given. No atomic ordering in this system was confirmed, and some diffuse scattering of CoMn around the (100)_M reflection just below the Néel point was found. A universal relationship between the Néel point and the lattice parameter for the γ-Fe like antiferromagnetic alloys was found and an interpretation about the fundamental magnetic properties reported in the preceding paper was given.