Negative magnetostrictive magnetoelectric coupling of BiFeO3

Sanghyun Lee, M. T. Fernandez-Diaz, H. Kimura, Y. Noda, D. T. Adroja, Seongsu Lee, Junghwan Park, V. Kiryukhin, S. W. Cheong, M. Mostovoy, Je Geun Park

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)

Abstract

How magnetoelectric coupling actually occurs on a microscopic level in multiferroic BiFeO3 is not well known. By using high-resolution single crystal neutron diffraction techniques, we have determined the electric polarization of each individual element of BiFeO3, and concluded that magnetostrictive coupling suppresses the electric polarization at the Fe site below TN. This negative magnetoelectric coupling appears to outweigh the spin current contributions arising from the cycloid spin structure, which should produce positive magnetoelectric coupling.

Original languageEnglish
Article number060103
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number6
DOIs
Publication statusPublished - 2013 Aug 21

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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