Figure 5: Giant magnetoelectric effect observed in the high-pressure phase of TbMnO3.
From: Giant spin-driven ferroelectric polarization in TbMnO3 under high pressure
(a) Temperature profiles of εa scaled by the value of 60 K at 7.1 GPa and several magnetic fields. (b) Magnetic-field-induced change in electric polarization at 5 K and 7.1 GPa. (c) Temperature versus magnetic-field phase diagram superimposed on the contour map of the value of induced electric polarization at 7.1 GPa. Open circles, squares and diamonds denote the temperature at which εa–T curves exhibit a steep increase of εa toward low T, a peak structure and a small shoulder, respectively. Here we adopt the data taken on cooling. Both E and B are applied along the a axis.
