Figure 1
Perspective view of columbite structure (space group Pbcn; ranges of unit-cell dimensions for x = 0–1: a ≃ 14.44–14.27, b ≃ 5.77–5.73, c ≃ 5.08–5.05 Å) showing the interconnection between the octahedral sites which form edge-sharing chains, cross-linked by shared corners. |