Enhanced ferroelectric polarization by induced Dy spin-order in multiferroic DyMnO3
强关联电子
2007-05-23 v1
摘要
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.
引用
@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}
}