Charge Ordered Structure and Dielectric Properties in LuFe2O4
نویسندگان
چکیده
منابع مشابه
Extreme chemical sensitivity of nonlinear conductivity in charge-ordered LuFe2O4
Nonlinear transport behaviors are crucial for applications in electronic technology. At the nonlinear critical turning point, the nonequilibrium states cause rich physics responses to environment. The corresponding study in this field is crucial for physics and industry application. Here nonlinear conductivity in charge-ordered (CO) LuFe(2)O(4 )has been demonstrated. Remarkable resistivity swit...
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The electronic ferroelectric lutetium ferrite (LuFe(2)O(4)) was studied by x-ray diffraction as a function of pressure. Pressure is shown to induce an irreversible rhombohedral to orthorhombic transition leading to a supercell determined by the combination of electron and synchrotron x-ray diffraction. This new configuration is proposed to be charge ordered in agreement with the results of resi...
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We show results of broadband dielectric measurements on the charge ordered, proposed to be multiferroic material LuFe(2)O(4). The temperature and frequency dependence of the complex permittivity as investigated for temperatures above and below the charge-order transition near T(CO)≈320 K and for frequencies up to 1 GHz can be well described by a standard equivalent-circuit model considering Ma...
متن کاملCharge order in LuFe2O4: an unlikely route to ferroelectricity.
We present the refinement of the crystal structure of charge-ordered LuFe2O4, based on single-crystal x-ray diffraction data. The arrangement of the different Fe-valence states, determined with bond-valence-sum analysis, corresponds to a stacking of charged Fe bilayers, in contrast with the polar bilayers previously suggested. This arrangement is supported by an analysis of x-ray magnetic circu...
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ژورنال
عنوان ژورنال: Nihon Kessho Gakkaishi
سال: 2008
ISSN: 0369-4585,1884-5576
DOI: 10.5940/jcrsj.50.150