Figure 2
(a) The NiAs structure of Fig. 1 viewed along [110] stuffed with an additional Ni atom (orange) to form the Ni2In structure. The blue contacts form the As octahedra shown in red in Fig. 1. The red contacts represent the trigonal prisms of Ni atoms which are occupied by the As atoms. (b) Perspective view of the same structure in which the graphite-like NiAs layers are highlighted. |