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Engineering Physics by S. Mani Naidu

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2.9 Diamond cubic structure

The structure of diamond crystal unit cell is considered as the interpenetration of two FCC carbon unit cells along their body diagonals by a distance of images the diagonal length. The origin of one unit cell is at (000) and the origin of another unit cell is at images. The diamond lattice structure and the projection of lattice points on bottom face of the cube are shown in Fig. 2.15. The fractions denote height of lattice points above the bottom face, interms of cube edge.

 

Figure 2.15 (a) Diamond lattice structure; (b) Projection ...

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