ATOMIC ORDERING IN NI3MN-NI3TI AND NI3MN-NI3V ALLOYS

Structural and magnetic states of alloys of Ni3Mn-Ni3Ti and Nb3Mn-Ni,V sections have been studied by neutron diffraction and magnetic suscep tibility measurements. Kurnakov temperatures in gamma'-phase were foun d to increase owing to alloying with titanium and vanadium. Concentrat ion dependences of long-range order parameters have been determined an d phase diagrams of the ordered alloys have been constructed. Long-ran ge ferromagnetic ordering has been found in Ni3Ti intermetallic compou nd alloyed with manganese.