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arXiv · 1005.1152

Incompatible Magnetic Order in Multiferroic Hexagonal DyMnO3

C. Wehrenfennig·D. Meier·Th. Lottermoser·Th. Lonkai·J. -U. Hoffmann·N. Aliouane·D. N. Argyriou·M. Fiebig
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Abstract

Magnetic order of the manganese and rare-earth lattices according to different symmetry representations is observed in multiferroic hexagonal (h-) DyMnO$_3$ by optical second harmonic generation and neutron diffraction. The incompatibility reveals that the 3d-4f coupling in the h-$R$MnO$_3$ system ($R$ = Sc, Y, In, Dy - Lu) is substantially less developed than commonly expected. As a consequence, magnetoelectric coupling effects in this type of split-order parameter multiferroic that were previously assigned to a pronounced 3d-4f coupling have now to be scrutinized with respect to their origin.

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C. Wehrenfennig, D. Meier, Th. Lottermoser, Th. Lonkai, J. -U. Hoffmann, N. Aliouane, D. N. Argyriou, M. Fiebig. 2010-05-07. Incompatible Magnetic Order in Multiferroic Hexagonal DyMnO3. https://doi.org/10.1103/physrevb.82.100414

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