Crystal structure of Diamond

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Presentation transcript:

Crystal structure of Diamond Diamond structure is like a face-centered cubic(FCC) lattice. Each carbon atom joins four other carbon atoms in regular tetrahedrons. A tetrahedron has four faces and six edges. It is like an Egyptian pyramid in which the base is a triangle instead of a square.

Diamond structure Imagine a face-centered cubic lattice! Diamond is composed of pure carbon.

Diamond structure view the cube from a green arrow along the diagonal a diagonal passing through the center of a cube

Diamond structure This is the cubic lattice viewed from a green arrow. 1 2 3 This is the cubic lattice viewed from a green arrow. 1 2 3 In a diamond structure, a carbon exists at the center of a regular tetrahedron consisted of a and three .

Diamond structure 1 2 3 1 2 3

Diamond structure 1 2 3 1 2 3

Diamond structure 1 2 3 1 2 3

Diamond structure 1 2 3 3 2 1

Diamond structure 1 2 3

Diamond structure 1 2 3 This structure shows one unit cell of the diamond structure. The diamond structure can be viewed as a face-centered cubic array with half of the tetrahedral holes filled.