An x-ray resonant diffraction study of multiferroic DyMn2O5

Abstract

X-ray resonant scattering has been used to measure the magnetic order of the Dy ions below 40K in multiferroic DyMn${}_2$O${}_5$. The magnetic order has a complex behaviour. There are several different ordering wavevectors, both incommensurate and commensurate, as the temperature is varied. In addition a non-magnetic signal at twice the wavevector of one of the commensurate signals is observed, the maximum intensity of which occurs at the same temperature as a local maximum in the ferroelectric polarisation. Some of the results, which bear resemblence to the behaviour of other members of the RMn${}_2$O${}_5$ family of multiferroic materials, may be explained by a theory based on so-called acentric spin-density waves.

8 pages, 8 figures

References in corpus (7)

• Spin current and magneto-electric effect in non-collinear magnets
• Ferroelectricity in spiral magnets
• Magnetic inversion symmetry breaking and ferroelectricity in TbMnO3
• Spin structure and magnetic frustration in multiferroic RMn2O5 (R = Tb, Ho, Dy)
• Ferroelectricity induced by acentric spin-density waves in YMn${}_2$O${}_5$
• Multiferroicity induced by dislocated spin-density waves
• Non-resonant and Resonant X-ray Scattering Studies on Multiferroic TbMn2O5

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• Effect of Inversion Symmetry on Incommensurate Order in Multiferroic RMn2O5, R=rare earth
• Antiferromagnetically spin polarized oxygen observed in magneto-electric TbMn2O5
• Electric field control of multiferroic domains in Ni${}_3$V${}_2$O${}_8$ imaged by X-ray polarization enhanced topography
• Order Parameters and Phase Diagrams of Multiferroics
• Ordering of localized electronic states in multiferroic TbMnO3: a soft X-ray resonant scattering study
• Reversing ferroelectric polarization in multiferroic DyMn2O5 by nonmagnetic Al substitution of Mn
• The Magnetic Structure of DyMn2O5 Determined by Resonant X-ray Scattering