On the structure of diamond crystals according to Bragg
Abstract
This note is prompted primarily by the desire to present Bragg's final conclusion in a more graphic form; and then, in view of the complete originality of this conclusion and its rather sharp divergence from our previous ideas about the structure of particles, a desire arose to determine whether it is possible to reconcile it with them. Reflecting on the arrangement of the atoms, we can easily understand that it is of two kinds. Some atoms occupy the positions of the centers of rhombic dodecahedra, others occupy the position of such four trigonal vertices of a dodecahedron that together belong to a tetrahedron. It is precisely this arrangement that determines the hexakis-tetrahedral type of symmetry, and, although the arrangement of the centers of the some particles corresponds to a dodecahedral structure, the situation is altered by the arrangement of the other atoms.
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