TY - GEN
T1 - Ferroelectricity from electron ordering
AU - Ikeda, Naoahi
AU - Mori, Shigeo
AU - Yoshii, Kenji
AU - Matsuo, Yoji
PY - 2006/12/1
Y1 - 2006/12/1
N2 - We report ferroelectricity in the triangular mixed valence material RFe2O4 (R=Y, Dy, Ho, Er, Tm, Yb, Lu). This ferroelectricity originates from the polar ordering of Fe3+ and Fe2+ or the polar ordering of electrons on Fe3+. The electric polarization arising from such electron ordering may not couple with the lattice modulation. The ordering process of Fe 2+ and Fe3+ are explained by the frustrated interaction of charges in a triangular lattice. The ferroelectric property of this material is present at room temperature.
AB - We report ferroelectricity in the triangular mixed valence material RFe2O4 (R=Y, Dy, Ho, Er, Tm, Yb, Lu). This ferroelectricity originates from the polar ordering of Fe3+ and Fe2+ or the polar ordering of electrons on Fe3+. The electric polarization arising from such electron ordering may not couple with the lattice modulation. The ordering process of Fe 2+ and Fe3+ are explained by the frustrated interaction of charges in a triangular lattice. The ferroelectric property of this material is present at room temperature.
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M3 - Conference contribution
AN - SCOPUS:41049084842
SN - 9781604234183
T3 - Materials Research Society Symposium Proceedings
SP - 140
EP - 148
BT - Ferroelectrics and Multiferroics
T2 - 2006 MRS Fall Meeting
Y2 - 27 November 2006 through 1 December 2006
ER -