Enhanced ferroelectric polarization by induced Dy spin-order in multiferroic DyMnO3

O. Prokhnenko; R. Feyerherm; E. Dudzik; S. Landsgesell; N. Aliouane; L. C. Chapon; D. N. Argyriou

doi:10.1103/PhysRevLett.98.057206

Enhanced ferroelectric polarization by induced Dy spin-order in multiferroic DyMnO3

Strongly Correlated Electrons 2007-05-23 v1

Authors: O. Prokhnenko , R. Feyerherm , E. Dudzik , S. Landsgesell , N. Aliouane , L. C. Chapon , D. N. Argyriou

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Abstract

Neutron powder diffraction and single crystal x-ray resonant magnetic scattering measurements suggest that Dy plays an active role in enhancing the ferroelectric polarization in multiferroic DyMnO3 above TNDy = 6.5 K. We observe the evolution of an incommensurate ordering of Dy moments with the same periodicity as the Mn spiral ordering. It closely tracks the evolution of the ferroelectric polarization which reaches a maximum value of 0.2 muC/m^2. Below TNDy, where Dy spins order commensurately, the polarization decreases to values similar for those of TbMnO3.

Keywords

ferroelectric polarization multiferroic DyMnO3 spin order neutron diffraction x-ray resonant magnetic scattering

Cite

@article{arxiv.cond-mat/0609024,
  title  = {Enhanced ferroelectric polarization by induced Dy spin-order in multiferroic DyMnO3},
  author = {O. Prokhnenko and R. Feyerherm and E. Dudzik and S. Landsgesell and N. Aliouane and L. C. Chapon and D. N. Argyriou},
  journal= {arXiv preprint arXiv:cond-mat/0609024},
  year   = {2007}
}

Enhanced ferroelectric polarization by induced Dy spin-order in multiferroic DyMnO3

Abstract

Keywords

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