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- W2890898982 abstract "Conventional solid state reaction route was used for the synthesis of oxygen deficient BaZr1−xYbxO3-δ (x = 0.05, 0.10, 0.15, 0.20) oxide. Rietveld refinement of x-ray diffraction data confirmed the formation of mono-phasic cubic perovskite structure with space group Pm3¯m. The microstructure coupled with EDX analysis of the sintered ceramics reveals the formation of sub-micron sized grains, with no detection of impurity elements. Thermogravimetric analysis of the pre-hydrated sample shows a significant mass loss suggesting complete filling of oxygen vacancies by protonic defects. Impedance spectroscopy performed under wet N2 environment show highest proton conductivity for the composition with x = 0.20. The total conductivity at 600 °C significantly increased from the order of 10−5 Scm−1 for x = 0.05 to 10−3 Scm−1 for x = 0.20 composition. The activation energy calculated from the Arrhenius dependence of total conductivity decreased with an increase in trivalent Yb3+ concentration, since the number of charge carriers in the form of protonic defects increases." @default.
- W2890898982 created "2018-09-27" @default.
- W2890898982 creator A5018015661 @default.
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- W2890898982 date "2019-01-01" @default.
- W2890898982 modified "2023-09-26" @default.
- W2890898982 title "A comparative proton conductivity study on Yb-doped BaZrO3 perovskite at intermediate temperatures under wet N2 environment" @default.
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- W2890898982 doi "https://doi.org/10.1016/j.jallcom.2018.08.329" @default.
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