Figure 5
(a) The fluorite structure. (b) The position of the diffuse circles in the diffraction patterns of CSZ's. (c) Successive [100] layers of cations in the pyrochlore structure. The large square is the pyrochlore unit cell and the small square is the fluorite parent cell. (d) The nearest-neighbour tetrahedral clusters, A–E, and next-nearest-neighbour square clusters, F–K, used in the potential used to generate the pyrochlore structure. |