Control of the magnetoelectric domain-wall stability by a magnetic field in a multiferroic MnWO4

K. Taniguchi, N. Abe, H. Umetsu, H. Aruga Katori, T. Arima

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

The relation between the orientation of the magnetic field and the flopped ferroelectric polarization has been investigated for multiferroic MnWO4. The ferroelectric single-domain state is retained across the polarization flop process when the direction of the applied magnetic field slightly deviates from the b axis within the ab plane. Furthermore, the electric polarization in the high-field Pa phase is reversed when the Pb-to-Pa transition takes place while decreasing and increasing the magnetic fields oppositely canted from the b axis. These results indicate that the symmetry breaking induced by a canted magnetic field determines the direction of the polarization flop, which corresponds to the direction of the vector spin chirality. The stability of the magnetoelectric domain walls in a canted magnetic field play a key role in the directional control of the electric polarization flop phenomenon.

Original languageEnglish
Article number207205
JournalPhysical review letters
Volume101
Issue number20
DOIs
Publication statusPublished - 2008 Nov 14

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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