Size dependence of twin formation energy of metallic nanowires

Figures & data

Figure 1. Schematic of the simulation cell of a <111> nanowire with a circular cross section (a) and a hexagonal cross section (b). Blue (dark) spheres represent atoms at twin boundaries and gray spheres represent atoms in an FCC structure.

Figure 2. Twin formation energy γ _t as a function of nanowire diameter d for both circular and hexagonal cross sections. The dashed lines show the bulk values γ_bulk and the solid lines represent theory (discussed in Section 3).

Figure 3. Twin formation energy of individual shells as a function of radial coordinate r. The dashed lines represent the twin formation energies in the bulk.

Figure 4. (a) Twin formation energy of individual shells as a function of radial coordinate r and (b) comparison of theory and simulation results. The dashed lines represent the twin formation energies in the bulk.