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 (6)

• Spin current and magneto-electric effect in non-collinear magnets
• Ferroelectricity in spiral magnets
• Magnetic inversion symmetry breaking and ferroelectricity in TbMnO3
• Distorted Perovskite with e_g^1 Configuration as a Frustrated Spin System
• Neutron diffraction study of TbMnO3: Magnetic structure revisited
• Field induced linear magneto-elastic coupling in multiferroic TbMnO3

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