Neutron Diffraction Study of κ Phase Cu-Mn-Al Alloys

抄録

Neutron diffraction study of the atomic and spin arrangement of the κ phase of ternary alloys Cu₂₀–Mn_30+x–Al_50−x(x=0 5 and 10) has beed performed. It is shown that, for alloys x≠0, excess Mn atoms replace Al atoms at body center sites of CsCl type crystal lattice, and their spins couple antiparallel with those at corner sites of the unit cell, confirming Tsuboya’s model proposed to explain the results of magnetic measurements.