fig3
![Elastic properties and Ion-mediated domain switching of self-assembled heterostructures CuInP<sub>2</sub>S<sub>6</sub>-In<sub>4/3</sub>P<sub>2</sub>S<sub>6</sub>](https://image.oaes.cc/6173235b-5435-43f7-870a-73e4f559c6a1/5374.fig.3.jpg)
Figure 3. Ferroelectric characterizations of CIPS-IPS crystal. (A and B): a representative topography and phase images. Inset: height curve at white section line. (C and F): the PFM phase and amplitude hysteresis loops in P1 (polarization downward) and P2 (polarization upward), respectively. (D and E): the enlarged amplitude and phase images in the blue boxed region of (B).