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- W1998456483 abstract "Polycrystalline LuFe2O4 ceramics was synthesized by solid state reactions at 1200°C with a mixed gas flow of CO2 and H2. The temperature dependence of zero-field cooled and field-cooled magnetization measurements indicates a clear paramagnetic to ferromagnetic transition in our LuFe2O4 samples. The temperature relaxation behavior of LuFe2O4 ceramics was investigated by an impendence analyzer in the frequency range from 20 Hz to 1 MHz. The contributions of grain boundaries, bulks, and electrodes to the ac conductivity and relaxation processes were identified by fitting the impendence data with an equivalent circuit model. When the temperature is lower than around 220 K, the bulk effect dominates over the contributions of grain boundaries and electrodes on the dielectric relaxation process. However, when the temperature is higher than 220 K, the electrode effect becomes dominant. The polycrystalline LuFe2O4 also show a temperature dependent activation energies for ac conductivities which may relate to non-stoichiometric oxygen deficiency in our samples." @default.
- W1998456483 created "2016-06-24" @default.
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- W1998456483 date "2013-01-01" @default.
- W1998456483 modified "2023-09-26" @default.
- W1998456483 title "Temperature Dependent Relaxation Behavior of Polycrystralline LuFe2O4 Studied By Dielectric Spectroscopy" @default.
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- W1998456483 doi "https://doi.org/10.1080/10584587.2013.787839" @default.
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