Figure 6.2: Schematic unit-cells (a,c) and LEED patterns (b,d) the ThSi_2 (a,b) and AlB

Figure 6.2: Schematic unit-cells (a,c) and LEED patterns (b,d) for the ThSi_2 (a,b) and AlB_2 (c,d) polymorphs.
The orthorhombic `building block' for the unit-cells is indicated in a and b.
The reciprocal meshes are indicated with dotted lines, the 1*1 mesh is indicated with solid lines.

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Figure 6.1: Schematic LEED patterns for Si{111}2*2-X and 2*1-X.
Figure 6.2: Schematic unit-cells (a,c) and LEED patterns (b,d) for the ThSiR_2 (a,b) and AlB_2 (c,d) polymorphs.