Figure 3

Diagram of the process. (a) Hexagonal closely packed cell; (b) compress along \(\left[\overline{1 }2\overline{1 }0\right]\); (c) compress along \(\left[\overline{1 }010\right]\); (d) compress along \(\left[0001\right]\).

Diagram of the process. (a) Hexagonal closely packed cell; (b) compress along \(\left[\overline{1 }2\overline{1 }0\right]\); (c) compress along \(\left[\overline{1 }010\right]\); (d) compress along \(\left[0001\right]\).