Charge Frustration and Dielectric Dispersion in LuFe2O4.
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- Ikeda Naoshi
- Advanced Research Center, Waseda University, Okubo–3, Shinjuku–ku, Tokyo 169–8555
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- Kohn Kay
- Department of Physics, Waseda University, Okubo–3, Shinjuku–ku, Tokyo 169–8555
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- Myouga Nobuyuki
- Department of Physics, Waseda University, Okubo–3, Shinjuku–ku, Tokyo 169–8555
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- Takahashi Eri
- Department of Physics, Waseda University, Okubo–3, Shinjuku–ku, Tokyo 169–8555
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- Kitôh Hijiri
- National Institute for the Research of Inorganic Materials, 1–1 Namiki Tsukuba, Ibaraki 305–0044
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- Takekawa Shunji
- National Institute for the Research of Inorganic Materials, 1–1 Namiki Tsukuba, Ibaraki 305–0044
Bibliographic Information
- Other Title
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- Charge Frustration and Dielectric Dispersion in LuFe<sub>2</sub>O<sub>4</sub>
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Abstract
We report the dielectric anomaries at the phase transitions of Lu(Fe2+ Fe3+)O4, which is considered as a charge and spin frustrated system. Dielectric constant shows a hump, just above the transition from the high temperature two-dimensional to the low temperature three-dimensional charge ordering. A few glassy behaviors were observed at this transition. The presence of spontaneous polarization in the low temperature phase was confirmed by the measurement of pyroelectricity. A step-wise increase of the dielectric constant with increasing temperature was observed between 150 K and 250 K as in other RFe2O4. These phenomena are explained by the presence of the polar domains with the ordering of Fe2+ and Fe3+ and the motions of the antiphase boundaries between them.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 69 (5), 1526-1532, 2000
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390001204180249600
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- NII Article ID
- 210000102260
- 110001978853
- 130004537522
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- NII Book ID
- AA00704814
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- BIBCODE
- 2000JPSJ...69.1526I
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- COI
- 1:CAS:528:DC%2BD3cXjvFWqsLk%3D
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- ISSN
- 13474073
- 00319015
- http://id.crossref.org/issn/00319015
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- NDL BIB ID
- 5387474
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed