Abstract
In type-II multiferroics ferroelectricity is driven by magnetism, and the coupling between the two orders is generally larger than in conventional multiferroic materials. However, a critical problem that needs to be overcome for type-II multiferroics is that their polarization is far too low to be useful for applications. In this Rapid Communication, a group of researchers from Osaka University, Japan, demonstrate that in three prototypical manganites (TbMnO${}_{3}$, DyMnO${}_{3}$, and GdMnO${}_{3}$) magnetic field can induce giant changes in polarization under high pressure. In the gadolinium compound, the change they have observed reaches the record high value of 1.3 $\ensuremath{\mu}$C/cm${}^{2}$ among the spin-driven multiferroics.
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