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Thermal, dielectric, and magnetic properties in multiferroic Cu2.85Zn0.15Mo2O9

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Abstract

We study the effects of Zn substitution on single crystals of the low-dimensional multiferroic material Cu3Mo2O9. We report the magnetic field-temperature phase diagram obtained from the temperature and the magnetic field dependences of the specific heat, the dielectric constant, the differential magnetization, and the electric polarization-electric field curve in Cu2.85Zn0.15Mo2O9. We obtain three phases: a paraelectric and a ferroelectric phase, and a ferroelectric phase with a large coercive electric field. The origin of the last one is discussed based on the charge redistribution effect on a half-filled Mott insulator. In this phase, the Zn substitution induces a robust localized ferroelectric polarization that increases the coercive electric field.

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Authors and Affiliations

  1. Department of Physics, Sophia University, Tokyo, 102-8554, Japan

    Haruhiko Kuroe, Kento Aoki, Ryusuke Itoh, Tomohiro Hosaka, Takuya Hasegawa, Suguru Hachiuma, Mitsuru Akaki, Hideki Kuwahara & Tomoyuki Sekine

  2. National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0047, Japan

    Masashi Hase

  3. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8568, Japan

    Kunihiko Oka, Toshimitsu Ito & Hiroshi Eisaki

Authors
  1. Haruhiko Kuroe
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  2. Kento Aoki
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  3. Ryusuke Itoh
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  4. Tomohiro Hosaka
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  5. Takuya Hasegawa
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  6. Suguru Hachiuma
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  7. Mitsuru Akaki
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  8. Hideki Kuwahara
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  9. Tomoyuki Sekine
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  10. Masashi Hase
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  11. Kunihiko Oka
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  12. Toshimitsu Ito
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  13. Hiroshi Eisaki
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Correspondence to Haruhiko Kuroe.

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Kuroe, H., Aoki, K., Itoh, R. et al. Thermal, dielectric, and magnetic properties in multiferroic Cu2.85Zn0.15Mo2O9 . Journal of the Korean Physical Society 63, 542–545 (2013). https://doi.org/10.3938/jkps.63.542

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  • DOI: https://doi.org/10.3938/jkps.63.542

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