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

V. V. Shvartsman; P. Borisov; W. Kleemann; S. Kamba; T. Katsufuji

doi:10.1103/PhysRevB.81.064426

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

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

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

90 Citations (Scopus)

Abstract

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.

Original language	English
Article number	064426
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.81.064426
Publication status	Published - 2010 Feb 23

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.81.064426

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abstract = "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.",

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AU - Shvartsman, V. V.

AU - Borisov, P.

AU - Kleemann, W.

AU - Kamba, S.

AU - Katsufuji, T.

PY - 2010/2/23

Y1 - 2010/2/23

N2 - 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.

AB - 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.

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

Abstract

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