Fig. 8
From: An automatically curated first-principles database of ferroelectrics

Diagrams of polarization magnitude vs. point group. The left diagram shows the full range of polarizations from 0 to 140 ÎĽC/cm2 and the right diagram zooms in on polarizations in the range 0 to 25 ÎĽC/cm2. Point groups are grouped according to symmetry. The darkness of a radial cell is proportional to the number of candidates in that region of the plot.