Abstract

The multiferroic hexagonal RMnO3 compounds with R = Sc, Y, In, Ho–Lu are shown to be the source of ‘gigantic’ magnetoelectric effects: the application of static magnetic or electric field induces a phase transition with antiferromagnetic reordering of the Mn3+ sublattice and ferromagnetic ordering in the rare-earth sublattices. In addition, a coupling of magnetic and electric domain walls is observed.

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