Question

3.11. A small body-centered cubic single crystal equilibrates at high temperatures, and because of the anisotropy of its surface free energy per unit area, it adopts a faceted polyhedral shape with only10 crystal planes exposed. What are the Miller indices of the family of directions along which any two facets meet?

Answer 1

the family of directions are

[110], [101], [011], [1-10], [10-1], [01-1], [-110], [-101], [0-11], [-1-10], [-10-1], [0-1-1]

totally 12 crystallographic directions are present.