Fig. 4: Ferroelectric domain structures and polarization switching of PEA-TFMS.
From: Mechanically deformable organic ferroelectric crystal with plasticity optimized by fluorination
a–c PFM images of topography (a), amplitude (b), and phase (c) in the initial state. PFM: Piezoresponse force microscope. d, g PFM amplitude (d) and phase (g) signals as functions of the tip voltage. The yellow and dark blue curves represent the spontaneous polarization of the crystal in two opposite directions. e, f, h, i Amplitude and phase images after applying tip voltages of +120 V (e, f) and −120 V (h, i).
