Crystal structure of

cubic boron nitride


Figure 3: Crystal structure of c-BN. Two unit cells of the cubic structure are shown at the right-hand side. In the middle the structure is projected along one of the threefold axes (cube diagonal). At the left-hand side the tetrahedral environments around one kind of atoms is emphasized. Boron and nitrogen atoms occupy equivalent positions, hence the structure may be thought to be composed of NB4/4 as well as BN4/4 tetrahedra.


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