Figure 1

Snapshots from 3D AKMC simulations showing (a) bcc, (b) fcc and (c) simple cubic void superlattices formation. All simulations are performed with a bcc matrix with SIAs diffusing along (a) 〈100〉, (b) 〈110〉 and (c) 〈111〉 directions, respectively. Only vacancies are shown here. The simulation cell is cubic with all three axes along 〈100〉, with a dimension of 40 a0 × 40 a0 × 40 a0. Pictures on the top (bottom) are projected along 〈100〉 (〈110〉).