Commensurate Dy magnetic ordering associated with incommensurate lattice distortion in orthorhombic DyMnO3

Abstract

Synchrotron x-ray diffraction and resonant magnetic scattering experiments on single crystal DyMnO3 have been carried out between 4 and 40 K. Below TN(Dy) = 5K, the Dy magnetic moments order in a commensurate structure with propagation vector 0.5 b*. Simultaneous with the Dy magnetic ordering, an incommensurate lattice modulation with propagation vector 0.905 b* evolves while the original Mn induced modulation is suppressed and shifts from 0.78 b* to 0.81 b*. This points to a strong interference of Mn and Dy induced structural distortions in DyMnO3 besides a magnetic coupling between the Mn and Dy magnetic moments.

submitted to Phys. Rev. B Rapid Communications

References in corpus (2)

• Spin current and magneto-electric effect in non-collinear magnets
• Neutron diffraction study of TbMnO3: Magnetic structure revisited

Cited by in corpus (6)

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• Phase transitions and rare-earth magnetism in hexagonal and orthorhombic DyMnO${}_3$ single crystals
• Coupling of frustrated Ising spins to magnetic cycloid in multiferroic TbMnO3
• Magnetic-field induced effects on the electric polarization in RMnO3 (R = Dy, Gd)
• Absence of commensurate ordering at the polarization flop transition in multiferroic DyMnO3
• Magnetic field induced transitions in multiferroic TbMnO3 probed by resonant and non-resonant X-ray diffraction