Anomalies in neutron diffraction patterns of -Mn alloys

Neutron scattering studies of a diffuse peak at the (100) and (001) r.l. points ware performed in Mn-Fe and Mn-Cu fct single-crystal single-domain samples. Temperature dependence of integrated intensity of (001) peak in Mn-Fe follows closely the sublattice magnetization, while in Mn-Cu it shows a maximum at T N . The origin of the scattering present at (100) — Z.B. point in Mn-Cu remains unknown.