Large off-diagonal magnetoelectric coupling in the quantum paraelectric antiferromagnet EuTiO3

V. V. Shvartsman, P. Borisov, W. Kleemann*, S. Kamba, T. Katsufuji

*この研究の対応する著者

研究成果: Article査読

89 被引用数 (Scopus)

抄録

The third-order E2 H2 -type magnetoelectric (ME) response of polycrystalline EuTiO3 changes sign under magnetic bias and shows a large anomaly at the antiferromagnetic (AF)-paramagnetic phase boundary below TN ≈5.3 K. It is attributed to critical fluctuations of the AF order parameter reinforced by quantum paraelectric polar correlations. The underlying biquadratic spin-lattice coupling involves electric field induced Dzyaloshinskii-Moriya interaction as described within mean-field approximation. Single domaining by ME annealing (or cooling) significantly enhances the response by additional EH and E H2 effects.

本文言語English
論文番号064426
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
81
6
DOI
出版ステータスPublished - 2010 2 23

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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