Charge ordered structure and dielectric properties in LuFe $_{2}$ O $_{4}$

Matsuo, Yoji*; Yoshii, Kenji ; Ikeda, Naoshi*; Mori, Shigeo*

LuFe $_{2}$ O $_{4}$ shows a new mechanism of ferroelectricity; the charge-ordered arrangement of Fe $^{2+}$ and Fe $^{3+}$ is the origin of ferroelectricity. In this work, we have investigated this material mainly by means of the transmission electron microscopy (TEM). It was found that both the charge-ordered structure and charge ordering processes depend strongly on the amount of the oxygen deficiency () in LuFe $_{2}$ O $_{4-delta}$ . For proper understanding of the properties in LuFe $_{2}$ O $_{4}$ and related materials, it should be essential to prepare LuFe $_{2}$ O $_{4-delta}$ samples with properly controlled oxygen-concentration and elucidate the physical properties in LuFe $_{2}$ O $_{4-delta}$ with 0.

Language	:	Japanese
Journal	:	Nihon Kessho Gakkai-Shi
Volume	:	50
Number	:	2
Pages	:	p.150 - 154
Publication Year/Month	:	2008/06
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Paper URL	:	https://doi.org/10.5940/jcrsj.50.150
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Keywords	:	no keyword
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Registration No. : AA20080170
JAEA Abstracts No. : 36000999
Paper Submission No. : 4312

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Charge ordered structure and dielectric properties in LuFeO

Charge ordered structure and dielectric properties in LuFe $_{2}$ O $_{4}$