Figure 2
From: The role of faceting and elongation on the magnetic anisotropy of magnetite Fe3O4 nanocrystals

Schematic illustration of generated elongated particles with size of 6 nm and elongation of 50% with ellipsoidal (a), truncated octahedral (b) and cuboidal (c) shape. Spheres indicate octahedral iron atoms (dark grey), tetrahedral iron atoms (light grey) and oxygen atoms (small, red).