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Switching of spontaneous electric polarization in the DyMnO3 multiferroic

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Abstract

For the DyMnO3 multiferroic with a modulated magnetic structure, switching of its spontaneous electric polarization (P ‖ c axis) near the ferroelectric transition (T < T FE ∼ 20 K) is revealed by measuring the dielectric hysteresis loops. It is found that the coercive field strongly increases as the temperature decreases (up to 2.6 kV/mm at 17.6 K). The values obtained for the spontaneous polarization are found to agree well with the data obtained from pyroelectric measurements. In addition, anomalies are observed in the temperature dependences of the spontaneous polarization P c , dielectric constant ɛ c , and magnetic susceptibility x b at T ∼ 6 K; these anomalies are attributed to the antiferromagnetic ordering of the Dy3+ ions.

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Authors and Affiliations

  1. Moscow State University, Moscow, 119992, Russia

    E. V. Milov, A. M. Kadomtseva, G. P. Vorob’ev & Yu. F. Popov

  2. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991, Russia

    V. Yu. Ivanov & A. A. Mukhin

  3. Moscow Power Engineering Institute (Technical University), ul. Krasnokazarmennaya 14, Moscow, 105835, Russia

    A. M. Balbashov

Authors
  1. E. V. Milov
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  2. A. M. Kadomtseva
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  3. G. P. Vorob’ev
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  4. Yu. F. Popov
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  5. V. Yu. Ivanov
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  6. A. A. Mukhin
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  7. A. M. Balbashov
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Additional information

Original Russian Text © E.V. Milov, A.M. Kadomtseva, G.P. Vorob’ev, Yu.F. Popov, V.Yu. Ivanov, A.A. Mukhin, A.M. Balbashov, 2007, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2007, Vol. 85, No. 10, pp. 610–614.

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Milov, E.V., Kadomtseva, A.M., Vorob’ev, G.P. et al. Switching of spontaneous electric polarization in the DyMnO3 multiferroic. Jetp Lett. 85, 503–506 (2007). https://doi.org/10.1134/S0021364007100074

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  • DOI: https://doi.org/10.1134/S0021364007100074

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