Figure 7. Mechanical works to move atoms in group I (W_I) and in group II (W_II), and total work (W_tot), during the polarization switching process between the initial configuration (η = 0) and the configuration of η = 0.2, for different vacancies.

For , the contribution W_I is too small to be seen in the graph. Note that the mechanical work in this figure is the work to move atoms (not vacancies).