Figure 6

Schematic drawings that illustrate.

(a) MDN structure with zero stacking fault energy; (b) the presence of curvature in partial dislocation lines and their possible recombination into perfect dislocations; (c) the balance between the stacking fault energy and the dislocation line tension; (d) an example structure of MDN within the periodic region marked in (a), the stacking fault energy is relatively high so that the ISF regions have shrank and the partial dislocations have combined to form perfect dislocations.