Ferroelectric charge order stabilized by antiferromagnetism in multiferroic LuFe2O4

A. M. Mulders; M. Bartkowiak; J. R. Hester; E. Pomjakushina; K. Conder

doi:10.1103/PhysRevB.84.140403

Ferroelectric charge order stabilized by antiferromagnetism in multiferroic LuFe2O4

Strongly Correlated Electrons 2011-11-09 v1 Materials Science

Authors: A. M. Mulders , M. Bartkowiak , J. R. Hester , E. Pomjakushina , K. Conder

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Abstract

Neutron diffraction measurements on multiferroic LuFe2O4 show changes in the antiferromagnetic (AFM) structure characterized by wavevector q = (1/3 1/3 1/2) as a function of electric field cooling procedures. The increase of intensity from all magnetic domains and the decrease in the 2D magnetic order observed below the Neel temperature are indicative of increased ferroelectric charge order. The AFM order changes the dynamics of the CO state, and stabilizes it. It is determined that the increase in electric polarization observed at the magnetic ordering temperature is due to a transition from paramagnetic 2D charge order to AFM 3D charge order.

Keywords

multiferroic LuFe2O4 ferroelectric charge order antiferromagnetism neutron diffraction electric polarization magnetic ordering 2D charge order 3D charge order

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@article{arxiv.1109.5762,
  title  = {Ferroelectric charge order stabilized by antiferromagnetism in multiferroic LuFe2O4},
  author = {A. M. Mulders and M. Bartkowiak and J. R. Hester and E. Pomjakushina and K. Conder},
  journal= {arXiv preprint arXiv:1109.5762},
  year   = {2011}
}

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5 pages, 3 figures

Ferroelectric charge order stabilized by antiferromagnetism in multiferroic LuFe2O4

Abstract

Keywords

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