Figure 2
Polyhedron distortions of (Ti,Fe)O6 octahedra as a function of t, where t = 0 refers to the centers of the slabs. Filled triangles and the solid line correspond to La5(Ti0.8Fe0.2)5O17; open triangles and the dotted line refer to La6(Ti0.67Fe0.33)6O20. Triangles pointing up represent distortions of octahedra in one row along , while the triangles pointing down refer to distortions of octahedra in the second rows. Error bars represent the spread of values for variation in temperature. They are smaller than the sizes of the symbols, if error bars are not shown. |