Figure 8. Measured ME responses and proposed model.

(a) The measured P(T) curves and proposed P_MM(T) and P_DM(T) curves under H = 0 and H ≫ 0 (e.g. ~2 T). It is suggested that the P_MM is robust against H while the P_DM can be seriously suppressed by H, due to the field induced Dy³⁺ spin realignment as proposed in Fig. 7. The ferrielectric lattice at H = 0 is shown in (b), which transfers into the lattice in (c) at H ≫ 0. This lattice in (c) is composed of the P_MM sublattice shown in (d) plus the P_DM sublattice shown in (e). P = P_DM + P_MM.