Novel Multiferroic State of Eu 1-x YxMnO3 in High Magnetic Fields

M. Tokunaga*, Y. Yamasaki, Y. Onose, M. Mochizuki, N. Furukawa, Y. Tokura

*この研究の対応する著者

研究成果: Article査読

22 被引用数 (Scopus)

抄録

Magnetic and dielectric properties of Eu 1-x YxMnO3 (x=0 and 0.4) are studied in pulsed magnetic fields up to 55 T. For x=0, application of magnetic fields higher than 20 T along the b axis causes magnetic transitions accompanied by generation of electric polarization (P) along the a axis. Similar first-order transitions are also observed in crystals of x =0.4, in which the ground state at zero magnetic field is already a ferroelectric P □ a phase of different origin. Realistic model calculation indicates the presence of a novel multiferroic state induced by the spin exchange striction mechanism in high magnetic fields as an essential nature of the frustrated Mn spin system in this class of manganites.

本文言語English
論文番号187202
ジャーナルPhysical Review Letters
103
18
DOI
出版ステータスPublished - 2009 10月 28
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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