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Ultrafine Ce 1−x Nd x O 2−δ (x=0–0.25) powders were synthesized by self-propagating room temperature synthesis. Raman spectra were measured at room temperature in the 300–700cm −1 spectral range. The shift and asymmetric broadening of the Raman F 2g mode at about 454cm −1 in pure and doped ceria samples could be explained with combined size and inhomogenous...
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