Synchrotron observation of the charge ordering and spontaneous polarization in LuFe2O4

Naoshi Ikeda; Masahiko Tanaka; Hijiri Kitô; Satoshi Sasaki; Yasusada Yamada

doi:10.1080/00150199908014820

Synchrotron observation of the charge ordering and spontaneous polarization in LuFe₂O₄

Naoshi Ikeda, Masahiko Tanaka, Hijiri Kitô, Satoshi Sasaki, Yasusada Yamada

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We report a synchrotron orbital radiation study of a charge ordering in a triangular mixed valence system LuFe₂O₄. Using the X-ray anomalous dispersion method near the iron K-shell absorption edge, we confirmed a superstructure of Fe²⁺ and Fe³⁺ on the triangular lattice with a configuration of a √3 × √3 × 2 structure. This charge structure shows a spontaneous polarization. The existence of two dimensional charge ordering above 330K was deduced from the temperature dependence of the energy dispersion for the superlattice reflection.

Original language	English
Pages (from-to)	227-235
Number of pages	9
Journal	Ferroelectrics
Volume	222
Issue number	1-4
DOIs	https://doi.org/10.1080/00150199908014820
Publication status	Published - 1999
Externally published	Yes

Keywords

Anomalous X-ray dispersion
Charge frustration
Charge order
LuFeO
RFeO
SOR experiment

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1080/00150199908014820

Cite this

@article{97f8a9ba2f074927994e93f0e027b40a,

title = "Synchrotron observation of the charge ordering and spontaneous polarization in LuFe2O4",

abstract = "We report a synchrotron orbital radiation study of a charge ordering in a triangular mixed valence system LuFe2O4. Using the X-ray anomalous dispersion method near the iron K-shell absorption edge, we confirmed a superstructure of Fe2+ and Fe3+ on the triangular lattice with a configuration of a √3 × √3 × 2 structure. This charge structure shows a spontaneous polarization. The existence of two dimensional charge ordering above 330K was deduced from the temperature dependence of the energy dispersion for the superlattice reflection.",

keywords = "Anomalous X-ray dispersion, Charge frustration, Charge order, LuFeO, RFeO, SOR experiment",

author = "Naoshi Ikeda and Masahiko Tanaka and Hijiri Kit{\^o} and Satoshi Sasaki and Yasusada Yamada",

year = "1999",

doi = "10.1080/00150199908014820",

language = "English",

volume = "222",

pages = "227--235",

journal = "Ferroelectrics",

issn = "0015-0193",

publisher = "Taylor and Francis Ltd.",

number = "1-4",

}

TY - JOUR

T1 - Synchrotron observation of the charge ordering and spontaneous polarization in LuFe2O4

AU - Ikeda, Naoshi

AU - Tanaka, Masahiko

AU - Kitô, Hijiri

AU - Sasaki, Satoshi

AU - Yamada, Yasusada

PY - 1999

Y1 - 1999

N2 - We report a synchrotron orbital radiation study of a charge ordering in a triangular mixed valence system LuFe2O4. Using the X-ray anomalous dispersion method near the iron K-shell absorption edge, we confirmed a superstructure of Fe2+ and Fe3+ on the triangular lattice with a configuration of a √3 × √3 × 2 structure. This charge structure shows a spontaneous polarization. The existence of two dimensional charge ordering above 330K was deduced from the temperature dependence of the energy dispersion for the superlattice reflection.

AB - We report a synchrotron orbital radiation study of a charge ordering in a triangular mixed valence system LuFe2O4. Using the X-ray anomalous dispersion method near the iron K-shell absorption edge, we confirmed a superstructure of Fe2+ and Fe3+ on the triangular lattice with a configuration of a √3 × √3 × 2 structure. This charge structure shows a spontaneous polarization. The existence of two dimensional charge ordering above 330K was deduced from the temperature dependence of the energy dispersion for the superlattice reflection.

KW - Anomalous X-ray dispersion

KW - Charge frustration

KW - Charge order

KW - LuFeO

KW - RFeO

KW - SOR experiment

UR - http://www.scopus.com/inward/record.url?scp=7044235875&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=7044235875&partnerID=8YFLogxK

U2 - 10.1080/00150199908014820

DO - 10.1080/00150199908014820

M3 - Article

AN - SCOPUS:7044235875

SN - 0015-0193

VL - 222

SP - 227

EP - 235

JO - Ferroelectrics

JF - Ferroelectrics

IS - 1-4

ER -