Electronic ferroelectricity from charge ordering in RFe2O 4

N. Ikeda; S. Mori; K. Yoshii; Y. Matsuo

doi:10.1109/ISAF.2007.4393232

Electronic ferroelectricity from charge ordering in RFe₂O ₄

N. Ikeda, S. Mori, K. Yoshii, Y. Matsuo

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We report a novel ferroelectricity arise from the polar ordering of Fe ³⁺ and Fe²⁺ in a mixed valence triangular lattice oxide LuFe₂O₄, where the electric polarization do not arise from the ionic displacement. The polar ordering of Fe³⁺ and Fe ²⁺ was confirmed with a resonant X-ray scattering study in SPring-8. The origin of such ordering is the competitive interaction between Fe ³⁺ and Fe²⁺ in the triangular lattice, i.e. the charge frustration. The polar superlattice of Fe³⁺ and Fe²⁺ develops below 350K where the electric polarization appears. The ferroelectricity arising from the polar charge ordering or the polar electron distribution may have a great potential for the future application of ferroelectrics.

Original language	English
Title of host publication	2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF
Pages	253-254
Number of pages	2
DOIs	https://doi.org/10.1109/ISAF.2007.4393232
Publication status	Published - 2007
Event	2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF - Nara-city, Japan Duration: May 27 2007 → May 31 2007

Publication series

Name	IEEE International Symposium on Applications of Ferroelectrics

Other

Other	2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF
Country/Territory	Japan
City	Nara-city
Period	5/27/07 → 5/31/07

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/ISAF.2007.4393232

Cite this

Ikeda, N, Mori, S, Yoshii, K & Matsuo, Y 2007, Electronic ferroelectricity from charge ordering in RFe₂O ₄. in 2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF., 4393232, IEEE International Symposium on Applications of Ferroelectrics, pp. 253-254, 2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF, Nara-city, Japan, 5/27/07. https://doi.org/10.1109/ISAF.2007.4393232

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title = "Electronic ferroelectricity from charge ordering in RFe2O 4",

abstract = "We report a novel ferroelectricity arise from the polar ordering of Fe 3+ and Fe2+ in a mixed valence triangular lattice oxide LuFe2O4, where the electric polarization do not arise from the ionic displacement. The polar ordering of Fe3+ and Fe 2+ was confirmed with a resonant X-ray scattering study in SPring-8. The origin of such ordering is the competitive interaction between Fe 3+ and Fe2+ in the triangular lattice, i.e. the charge frustration. The polar superlattice of Fe3+ and Fe2+ develops below 350K where the electric polarization appears. The ferroelectricity arising from the polar charge ordering or the polar electron distribution may have a great potential for the future application of ferroelectrics.",

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series = "IEEE International Symposium on Applications of Ferroelectrics",

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AU - Ikeda, N.

AU - Mori, S.

AU - Yoshii, K.

AU - Matsuo, Y.

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N2 - We report a novel ferroelectricity arise from the polar ordering of Fe 3+ and Fe2+ in a mixed valence triangular lattice oxide LuFe2O4, where the electric polarization do not arise from the ionic displacement. The polar ordering of Fe3+ and Fe 2+ was confirmed with a resonant X-ray scattering study in SPring-8. The origin of such ordering is the competitive interaction between Fe 3+ and Fe2+ in the triangular lattice, i.e. the charge frustration. The polar superlattice of Fe3+ and Fe2+ develops below 350K where the electric polarization appears. The ferroelectricity arising from the polar charge ordering or the polar electron distribution may have a great potential for the future application of ferroelectrics.

AB - We report a novel ferroelectricity arise from the polar ordering of Fe 3+ and Fe2+ in a mixed valence triangular lattice oxide LuFe2O4, where the electric polarization do not arise from the ionic displacement. The polar ordering of Fe3+ and Fe 2+ was confirmed with a resonant X-ray scattering study in SPring-8. The origin of such ordering is the competitive interaction between Fe 3+ and Fe2+ in the triangular lattice, i.e. the charge frustration. The polar superlattice of Fe3+ and Fe2+ develops below 350K where the electric polarization appears. The ferroelectricity arising from the polar charge ordering or the polar electron distribution may have a great potential for the future application of ferroelectrics.

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