Figure 4. Mechanical load effect on a nanoplatelet with initial 1-vortex state.

A nanoplatelet is under various mechanical loads but with an initial 1-vortex state obtained at free-standing condition. (a) The evolution of the toroidal moment component g_y under different surface traction T = 300 K. The inserts depict the initial and equilibrium domain morphologies. (b) and (c) depict the mean polarization magnitude <P> and the toroidal moment component g_y of equilibrium vortex domain structure as functions of surface traction under given temperatures. (d) Phase diagram of the equilibrium vortex domain structure as a function of surface traction and temperature.