Fig. 8: Comparison of the A15 cluster in fcc Al with the C15 cluster in bcc Fe.
From: Compact A15 Frank-Kasper nano-phases at the origin of dislocation loops in face-centred cubic metals
a Local pressure in the A15 cluster that builds a complete icosahedron with 7 interstitial atoms in fcc Al. b Local pressure in the C15 cluster that builds a complete Z16 polyhedron in bcc Fe with 12 interstitial atoms and 10 vacancies. The clusters are computed using the EAM potentials by Mendelev et al.46 for Al and by Marinica et al.42 for Fe. The structures are shown in the {111} plane and cut such as the atoms centring the polyhedra are visible.
