Local structure of triangular-lattice oxides LuFeMO $_{4}$ (M=Co,Cu)

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

We have investigated the local structure of LuFe(Co,Cu)O $_{4}$ , in which half of Fe ions are replaced by Co and Cu in electronic ferroelectric LuFe $_{2}$ O $_{4}$ . It was found that the electron diffraction patterns at room temperature showed diffuse scattering besides fundamental spots. Based on calculations for possible model structures, we suggest the existence of 4-point clusters consisting of Fe and Co/Cu, which is likely the origin of dielectric constant of 10-1000 at room temperature.

Language	:	Japanese
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Meeting title	:	日本物理学会2009年秋季大会(物性)
Held date	:	2009/09
Location (city)	:	熊本
Location (country)	:	日本
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Keywords	:	no keyword
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Registration No. : BB20092554
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Local structure of triangular-lattice oxides LuFeMO(M=Co,Cu)

Local structure of triangular-lattice oxides LuFeMO $_{4}$ (M=Co,Cu)