Magnetic/dielectric properties and charge ordering phenomenain YbFe $_{2-x}$ Mn $_{x}$ O $_{4}$ , 2

Matsumoto, Keisuke*; Hoshiyama, Takuya*; Oishi, Daisuke*; Akahama, Hiroshi*; Yoshii, Kenji ; Kano, Jun*; Hanasaki, Noriaki*; Kambe, Takashi*; Ikeda, Naoshi*; Mori, Shigeo*

We have investigated the physical properties of YbFe $_{2-x}$ Mn $_{x}$ O $_{4}$ , a derivative system of the electronic ferroelectric RFe $_{2}$ O $_{4}$ (R: rare earths). Electron diffraction measurements showed taht long-range charge ordering of the Fe-3d charges was observed at room temperature for x=0; this ordering is the origin of ferroelectricity. The x=0.1 oxide showed diffuse scattering patterns at room temperature, instead of the charge-ordered pattern. Thus, 5% Mn substitution can collapse the long-range charge ordering. We will also present the correlation between the magnetic/dielectric properties and the crystal structure.

Language	:	Japanese
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Meeting title	:	日本物理学会2010年秋季大会(物性)
Held date	:	2010/09
Location (city)	:	堺
Location (country)	:	日本
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Keywords	:	no keyword
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Registration No. : BB20101431
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Magnetic/dielectric properties and charge ordering phenomenain YbFeMnO, 2

Magnetic/dielectric properties and charge ordering phenomenain YbFe $_{2-x}$ Mn $_{x}$ O $_{4}$ , 2