Nanocrystal shape can have a strong influence on the 2D and 3D structure of
nano(NC) arrays, and it is important to its role if functional magnetic na
nodevices are to be realized. Here is presented a detailed TEM analysis of
11 nm Co NCs and their effect on the superlattice assembly. Twins and stack
ing faults (see Figure) are reported to be due to mismatched faces on adjac
ent nanocrystals (see also cover).