Figure 2
From: Room temperature ferroelectricity in fluoroperovskite thin films
PFM performed on NaMnF3 thin film. (a,b) 2 μm × 2 μm images with PFM amplitude (color) overlaid on the surface topography. The two images were taken at two different AC driving frequencies. (c) Frequency dependence of PFM amplitude measured at three different positions as marked in (b). The spatial variation of the resonance frequency (f 0 ) leads to the non-uniform PFM response imaged.
