Fig. 4: Phase diagrams for bidirectional mechanical switching. | npj Computational Materials

Fig. 4: Phase diagrams for bidirectional mechanical switching.

From: Bidirectional mechanical switching window in ferroelectric thin films predicted by first-principle-based simulations

Fig. 4

a The point force mechanical model and distribution of tip-force-induced strain field \(\varepsilon _{11}^{{{{\mathrm{ext}}}}}\), \(\varepsilon _{33}^{{{{\mathrm{ext}}}}}\), and \(\varepsilon _{13}^{{{{\mathrm{ext}}}}}\) in the film. b The ftip–β phase diagram for SD→PD switching. c The ftip–β phase diagram for PD→SD switching. d The ftip–β phase diagram indicating the bidirectional mechanical switching region.

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