Fig. 4
From: Magnetic field-induced ferroelectricity in S = 1/2 kagome staircase compound PbCu3TeO7
Temperature vs. magnetic-field phase diagram of PbCu3TeO7 for a H//c and b H//a. The data points indicate the anomalies in the dielectric constant (ε), magnetization (M), and electric polarization (P). Below the PM (paramagnetic), PE (paraelectric) phase, there exist several ordered phases: AFM 1, AFM 2, SF 1, SF 1’, SF 2, and FE (ferroelectric) phases
