Magnetic field induced transitions in multiferroic TbMnO3 probed by resonant and non-resonant X-ray diffraction

Abstract

Multiferroic TbMnO3 is investigated using x-ray diffraction in high magnetic fields. Measurements on first and second harmonic structural reflections due to modulations induced by the Mn and Tb magnetic order are presented as function of temperature and field oriented along the a and b-directions of the crystal. The relation to changes in ordering of the rare earth moments in applied field is discussed. Observations below T_N(Tb) without and with applied magnetic field point to a strong interaction of the rare earth order, the Mn moments and the lattice. Also, the incommensurate to commensurate transition of the wave vector at the critical fields is discussed with respect to the Tb and Mn magnetic order and a phase diagram on basis of these observations for magnetic fields H||a and H||b is presented. The observations point to a complicated and delicate magneto-elastic interaction as function of temperature and field.

arXiv comment12 pages, 15 figures, 2 references added

References in corpus (11)

• 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
• Spin-polarization coupling in multiferroic transition-metal oxides
• Neutron diffraction study of TbMnO3: Magnetic structure revisited
• Field induced linear magneto-elastic coupling in multiferroic TbMnO3
• Coupling of frustrated Ising spins to magnetic cycloid in multiferroic TbMnO3
• Commensurate Dy magnetic ordering associated with incommensurate lattice distortion in orthorhombic DyMnO3
• X-ray Resonant Scattering Study of the Order Parameters in Multiferroic TbMnO${}_3$
• Absence of commensurate ordering at the polarization flop transition in multiferroic DyMnO3

Cited by in corpus (9)

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• Microscopic Model and Phase Diagrams of the Multiferroic Perovskite Manganites
• Femtoscale magnetically induced lattice distortions in multiferroic TbMnO3
• Magnetic and magnetoelectric excitations in TbMnO${}_3$
• Nature of the magnetic order and origin of induced ferroelectricity in TbMnO${}_3$
• Electric field control of multiferroic domains in Ni${}_3$V${}_2$O${}_8$ imaged by X-ray polarization enhanced topography
• Circularly Polarised X-ray Scattering Investigation of Spin-Lattice Coupling in TbMnO${}_3$ in Crossed Electric and Magnetic Fields
• Dynamic pathway of the photoinduced phase transition of TbMnO${}_3$
• Magnetic and orbital correlations in multiferroic CaMn${}_7$O${}_{12}$ probed by x-ray resonant elastic scattering