Figure 2
From: Unraveling the Atomic Structure of Ultrafine Iron Clusters
Morphologies and structures of ultrafine Fe clusters.
(a) Bilayer triangular, (b) trilayer trapezoid HCP and (c) trilayer trapezoid FCC Fe clusters supported by graphene. (b) and (c) show the same Fe cluster but different stacking orders. Vacancies in the cluster in (a) are indicated by red arrow heads. The white dashed lines in (b) and (c) delineate the boundaries between monolayers and bilayers of graphene. Scale bar: 1 nm. (d–f) Corresponding atomic models showing the stacking configurations. There are 36 atoms in (d) and 112 atoms in (b) and (c). (g–i) The corresponding TEM simulations of models in (d–f). (j) A schematic diagram showing the slip systems in HCP or FCC stacking. <110> is the in-plane close-packed direction.
