Journal
JOURNAL OF SYNCHROTRON RADIATION
Volume 8, Issue -, Pages 740-742Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S0909049500018148
Keywords
CeO2Gd2O3; C-type structure; K-edge; XAFS
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X-ray absorption spectra near Ce and Gd K-edges of binary oxide of CexGd1-xO(3+x)/2 (0 less than or equal to x less than or equal to 0.5) in C-type structure solid solution were measured by use of the beamline BL01B1 at SPring-8. Interatomic distances between rare-earth and oxygen atoms, RGd-O and RCe-O, were evaluated with the extended x-ray absorption fine structure analysis and found to increase with x. RGd-O was larger than RCe-O by about 0.1 Angstrom. Metal-oxygen distances estimated as their linear combinations, xR(Ce-O) + (1-x) RGd-O, well agreed with those determined by X-ray diffraction.
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