Magnetoelectric properties of multiferroic TbMnO3 with a cycloidal spiral spin order were investigated as functions of applied pressure and magnetic field. We found that a flop of ferroelectric polarization occurs by applying a magnetic field along the a axis under 2-3 GPa below the Néel temperature of Tb moments. A possible origin of the magnetoelectric transition is discussed based on the observed pressure and magnetic-field profiles of the ferroelectric polarization and the dielectric relaxation. This flop would originate from the 90° rotation of the cycloidal spiral plane from the bc plane to the ab plane.
|ジャーナル||Journal of Physics: Conference Series|
|出版ステータス||Published - 2014|
|イベント||2014 International Conference on Strongly Correlated Electron Systems, SCES 2014 - Grenoble, France|
継続期間: 2014 7 7 → 2014 7 14
ASJC Scopus subject areas
- Physics and Astronomy(all)