  We analyze the impact of the magnetic anisotropy on the geometric structure
and magnetic ordering of small atomic clusters of palladium, iridium, platinum
and gold, using Density Functional Theory. Our results highlight the absolute
need to include self-consistently the spin orbit interaction in any simulation
of the magnetic properties of small atomic clusters, and a complete lack of
universality in the magnetic anisotropy of small-sized atomic clusters.

Materials Science;Other Condensed Matter