Figure 10
The icosahedra in cluster (a) A and (b) B along the periodic direction. the icosahedron given in (a) surrounds the Dy1 CN 16 polyhedra to form cluster A. Icosahedron in (b) is in the middle of five Dy2 CN 16 polyhedra, forming the star-shaped cluster B. (c) Packing of the icosahedra given in (b) along the periodic direction to form a column (periodic axis is on the vertical direction). |