Transient Magnetoelectric Coupling Induced by the Dynamic Intertwinement between Exchange Striction and Compensation in GdFeO 3 .

In this study, we investigate the dynamic magnetoelectric (ME) coupling behaviors of GdFeO 3 under pulsed magnetic fields. When a magnetic field is applied along the c -axis, and the temperature is near the compensation temperature ( T comp = 3.5 K), we observe a subtle transition involving the reversal of Fe 3+ moments at approximately 0.8 T in magnetization ( M ) measurements. This transition induces a corresponding jump in electrical polarization ( P ), which is not present in the static field measurements. The dynamic intertwining between M and P signifies a competition between antiferromagnetic (AFM) coupling between Gd 3+ and Fe 3+ moments and their Zeeman energies. The robust AFM coupling leads to the reversal of Fe 3+ moments near T comp , triggering the abrupt change in P . Based on the exchange striction mechanism in the ferrimagnetic GdFeO 3 , we propose the possibility of achieving highly magnetic field sensitive ME coupling near the compensation temperature in ferrimagnetic multiferroic orthoferrites.