The lattice describes the repeat pattern for diamond cubic crystals this lattice is "decorated" with a motif of two tetrahedrally bonded atoms in each primitive cell, separated by 1 / 4 of the width of the unit cell in each dimension. A lattice of 3 × 3 × 3 unit cellsĭiamond's cubic structure is in the Fd 3m space group (space group 227), which follows the face-centered cubic Bravais lattice. Visualisation of a diamond cubic unit cell: 1.
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