Fig. 3: Ferroelectricity of TMCM–CdCl3 recrystallized from DMF.
From: Discovery of molecular ferroelectric catalytic annulation for quinolines
a–c As-grown domain structures observed in TMCM–CdCl3 thin film: OP PFM amplitude (a), phase (b), and corresponding topography (c) images. d–g OP PFM amplitude d, f and phase (e, g) images after applying a tip voltage of −50 V to a single-domain region (d, e), and after applying an opposite tip voltage of +50 V (f, g). h Topography image of the same region after domain switching operation. The regions shown in the purple dashed boxes are the written domains obtained after applying the tip voltages. All the panels have the same scale bar of 1 μm. i Local PFM switching spectroscopy.
