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- W2178788193 abstract "In this work we study the electronic conductivity of reduced Gddoped ceria in single-crystals by impedance spectroscopy in the near-room temperature regime (25-110°C). The extent of nonstoichiometry in the “as-prepared” reduced samples is determined by thermogravimetry and the integral enthalpy of re-oxidation by differential scanning calorimetry. The results indicate that the electronic transport takes place via small polarons as in the case of pure ceria. We estimate the activation energy for the process of conduction to be 0.44 eV for Ce0.8Gd0.2O1.864 and 0.45 for Ce0.7Gd0.3O1.82 eV. We found that trapping takes place at the near room temperature regime with a considerable entropic contribution. The integral enthalpy of re-oxidation for Ce0.8Gd0.2O1.864 is 4.2 eV and for Ce0.7Gd0.3O1.82 is 3.6 eV." @default.
- W2178788193 created "2016-06-24" @default.
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- W2178788193 date "2019-12-21" @default.
- W2178788193 modified "2023-09-22" @default.
- W2178788193 title "Electronic Transport in Single Crystals of Gd-doped Ceria" @default.
- W2178788193 doi "https://doi.org/10.1149/1.2408943" @default.
- W2178788193 hasPublicationYear "2019" @default.
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