Lecture 9 (10/11/2006) Crystallography Part 2: Multiple Symmetry Operations Crystal Morphology. Rotation with Inversion (Rotoinversion) Equivalency to other symmetry operations. Combination of Symmetry Elements – Multiple Rotational Axes.
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422, 622, 222, 32, 23, 432
(View 422 Symmetry.ai)
Line traced by intersecting of X mirrors corresponds to X-fold rotation axis
Planes AB and AC will be the most common crystal faces in this cubic lattice array
Lattice planes with the highest density are the most stable, but experience slow growth due to the abundance of atoms needed to construct them.
These stable faces will appear at the nucleation stages of growth (1), but then will diminish due to fast growth in these directions (2-4).
Crystal Symmetry (Continued)
Read: Chapter 5, p. 192-201