Electric-field-induced spin-flop in BiFeO3 single crystals at room-temperature

D. Lebeugle; D. Colson; A. Forget; M. Viret; A. M. Bataille; A. Gukasov

doi:10.1103/PhysRevLett.100.227602

Electric-field-induced spin-flop in BiFeO3 single crystals at room-temperature

Materials Science 2009-11-13 v1

Authors: D. Lebeugle , D. Colson , A. Forget , M. Viret , A. M. Bataille , A. Gukasov

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Abstract

Bismuth ferrite, BiFeO3, is the only known room-temperature 'multiferroic' material. We demonstrate here, using neutron scattering measurements in high quality single crystals, that the antiferromagnetic and ferroelectric orders are intimately coupled. Initially in a single ferroelectric state, our crystals have a canted antiferromagnetic structure describing a unique cycloid. Under electrical poling, polarisation re-orientation induces a spin flop. We argue here that the coupling between the two orders may be stronger in the bulk than that observed in thin films where the cycloid is absent.

Keywords

BiFeO3 multiferroic spin-flop neutron scattering antiferromagnetic order ferroelectric order cycloid structure electrical poling

Cite

@article{arxiv.0802.2915,
  title  = {Electric-field-induced spin-flop in BiFeO3 single crystals at room-temperature},
  author = {D. Lebeugle and D. Colson and A. Forget and M. Viret and A. M. Bataille and A. Gukasov},
  journal= {arXiv preprint arXiv:0802.2915},
  year   = {2009}
}

Electric-field-induced spin-flop in BiFeO3 single crystals at room-temperature

Abstract

Keywords

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