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Journal Article

Absence of commensurate ordering at the polarization flop transition in multiferroic DyMnO3

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Strempfer,  J.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Bohnenbuck,  B.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Mostovoy,  M.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Strempfer, J., Bohnenbuck, B., Mostovoy, M., Aliouane, N., Argyriou, D. N., Schrettle, F., et al. (2007). Absence of commensurate ordering at the polarization flop transition in multiferroic DyMnO3. Physical Review B, 75(21): 212402.


Cite as: https://hdl.handle.net/21.11116/0000-000F-017D-4
Abstract
Ferroelectric spiral magnets DyMnO3 and TbMnO3 show similar behavior of electric polarization in applied magnetic fields. Studies of the field dependence of lattice modulations on the contrary show a completely different picture. Whereas in TbMnO3 the polarization flop from P parallel to c to P parallel to a is accompanied by a sudden change from incommensurate to commensurate wave vector modulation, in DyMnO3 the wave vector varies continuously through the flop transition. This smooth behavior may be related to the giant magnetocapacitive effect observed in DyMnO3.