Figure 3
Diffraction patterns showing the differing lattice types at different temperatures [at identical setting for (a) and (b), and for (c), (d) and (e)]. (a) (I) at 293 K, showing the body-centred tetragonal lattice; (b) (I) at 230 K, where the lattice has become C-centred orthorhombic; (c) (III) at 260 K, showing the body-centred cubic lattice; (d) (III) at 230 K, where the lattice has become C-centred orthorhombic; (e) (III) at 205 K, where the lattice has become primitive orthorhombic. |