Page 51 - Materials Chemistry, Second Edition
P. 51
38 2 Solid-State Chemistry
Figure 2.17. Equivalency of a base-centered tetragonal and a primitive tetragonal unit cell.
Figure 2.18. Unit cells for the 4H and 6H polytypes of silicon carbide, as viewed along the (11 20) plane.
Note that each carbon atom is situated in the center of a Si 4 tetrahedron.
