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

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||c to P||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.

References in corpus (4)

• Spin current and magneto-electric effect in non-collinear magnets
• Collinear-to-Spiral Spin Transformation without Changing Modulation Wavelength upon Ferroelectric Transition in Tb1-xDyxMnO3
• Enhanced ferroelectric polarization by induced Dy spin-order in multiferroic DyMnO3
• Commensurate Dy magnetic ordering associated with incommensurate lattice distortion in orthorhombic DyMnO3

Cited by in corpus (6)

• Dynamics of Multiferroic Domain Wall in Spin-Cycloidal Ferroelectric DyMnO${}_3$
• Electrically driven spin excitation in a ferroelectric magnet DyMnO_3
• Terahertz time-domain spectroscopy of electromagnons in multiferroic perovskite manganites
• Magnetic-field induced effects on the electric polarization in RMnO3 (R = Dy, Gd)
• Directional magnetoelectric effects in MnWO4: magnetic sources of the electric polarization
• Magnetic field induced transitions in multiferroic TbMnO3 probed by resonant and non-resonant X-ray diffraction