Magnetic ordering

The ordering of magnetic moments in about 60 compounds containing M=Cr, Mn, Fe, Co, Ni, Pd, rare earths or U is analyzed by the self-coordination numbers of nearest, second and third neighbor positions T1, T2, T3 and the ratio r=y/x of the equivalent positions x and remaining positions y. The plot of T1, T2 values for primitive cubic or hexagonal, face-centered or body-centered cubic lattices shows similar structures as in ordered alloys with small T2 values for attractive interactions and large T2 values at repulsive interactions. The intermediate interactions with T1, T2 values at the border of the structure map can be described by structure families with a combination of structural units