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- W2897637030 abstract "This research is aimed to examine oxidation state of Copper (Cu) in both as-synthesized and reduced T’-Pr 2- x Ce x CuO 4 (T’-PCCO) with x = 0, 0.10, and 0.15 using Cu K -edge x-ray absorption near edge structure (XANES). The T‘-PCCO nanopowders were successfully synthesized by the chemically dissolved method with HNO 3 as a dissolving agent continued by calcination at 1000°C for 15 h. The reduced T’-PCCO nanopowders were obtained by reduction annealing process at 700°C for 5 h under Ar gas atmosphere. The analyses of XANES spectra show that oxidation states of the Cu ions in all of the T'-PCCO nanopowders have values between +1 and +2. This indicates the existence of electron doping in the CuO 2 planes, even in the undoped T’-structure. It is found that the oxidation states of the Cu ions change after reduction annealing depending on the existence of apical oxygen in the T'-structure. Based on the XANES analyses, it is revealed that the change of oxidation state is influenced by the presence of both electron and hole carriers in the two-carrier model of T’-structure." @default.
- W2897637030 created "2018-10-26" @default.
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- W2897637030 date "2018-10-01" @default.
- W2897637030 modified "2023-09-24" @default.
- W2897637030 title "Oxygen Reduction Effect on T’-Pr<sub>2-</sub><i><sub>x</sub></i>Ce<i><sub>x</sub></i>CuO<sub>4</sub> Nanopowders in the Underdoped Regime Studied by X-Ray Absorption near Edge Structure" @default.
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- W2897637030 doi "https://doi.org/10.4028/www.scientific.net/msf.936.93" @default.
- W2897637030 hasPublicationYear "2018" @default.
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