The Magnetic Structure of DyMn2O5 Determined by Resonant X-ray Scattering
G. E. Johnstone, R. A. Ewings, R. D. Johnson, C. Mazzoli, H. C. Walker, and A. T. Boothroyd
TL;DR
This study uses resonant magnetic x-ray scattering to determine the magnetic structure of DyMn2O5, revealing unique moment orientations in the ferroelectric phase compared to related compounds.
Contribution
It provides the first detailed magnetic structure of DyMn2O5 in its ferroelectric phase using resonant x-ray scattering, highlighting differences in moment directions.
Findings
Dy and Mn moments lie close to the b-axis in DyMn2O5.
The magnetic structure is similar to other RMn2O5 compounds.
DyMn2O5 exhibits the strongest ferroelectric polarization in the series.
Abstract
Resonant magnetic x-ray scattering has been used to investigate the magnetic structure of the magnetoelectric multiferroic DyMn2O5. We have studied the magnetic structure in the ferroelectric phase of this material, which displays the strongest ferroelectric polarisation and magnetodielectric effect of the RMn2O5 (where R is a rare earth ion, Y or Bi) family. The magnetic structure observed is similar to that of the other members of the series, but differs in the direction of the ordered moments. In DyMn2O5 both the Dy and Mn moments lie close to the b-axis, whereas in other RMn2O5 they lie close to the a-axis.
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