Fig. 4: Magnetic reversal of electric polarization.
a–g Magnetic field variation of electric polarization along the c axis (Pc) at various temperatures. Before the measurements, the polarization is aligned along the negative direction by an electric field. Then we applied magnetic fields along [110]t up to 15 T and then decreased it to 0 T at various temperatures while measuring the polarization. At 410 K, we subsequently swept the magnetic field to −15 T and then back to 0 T. After the magnetic field sweep measurements, we increased the temperature up to above the ferroelectric transition temperature to estimate the absolute value of polarization (Supplementary Fig. 5).
