On the Electronic Structure of Suer-Lattice Ni₃Fe and Ni₃Mn

The electronic structure of the super-lattice Ni 3 Fe is evaluated by the tightbinding approximation. The energy bands are approximately, though not completely, divided into two groups by the widely extended energy gap, and, roughly speaking, five bands are above the gap and other fifteen bands are below the gap. This band structure seems to be quite favorable to produce the ferromagnetic state in Ni 3 Fe and Ni 3 Mn.