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Figure 3 . The representation of the three-dimensional LaZnB5O10 structure projected along the [010] direction with the BO3 triangles and BO4 tetrahedra. The structure contains the infinite two-dimensional [B5O10]5−n layers running almost perpendicular to the [101] direction. The La atoms are located in layers, while the Zn atoms are almost embedded in the layers. |