Figure 1
Crystal structures of (a), (b) La5(Ti0.8Fe0.2)5O17 and (c), (d) La6(Ti0.67Fe0.33)6O20. The pseudo-orthorhombic supercells are indicated by solid lines. Gray circles represent La atoms and (Ti,Fe)O6 octahedra are outlined. The numbering denotes the crystallographically independent Ti/Fe and La sites in the supercell description. |