Open AccessStudy on local structure around Ce and Gd atoms in CeO 2 –Gd 2 O 3 binary system
Author(s) -
Nakagawa Takashi,
Osuki Takahiro,
Yamamoto Takao A.,
Kitauji Yoshiyasu,
Kano Masataka,
Katsura Masahiro,
Emura Shuichi
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049500018148
Subject(s) - extended x ray absorption fine structure , crystallography , materials science , oxide , solid solution , diffraction , absorption (acoustics) , gadolinium , analytical chemistry (journal) , metal , absorption spectroscopy , oxygen atom , oxygen , x ray crystallography , spectral line , beamline , bond length , crystal structure , chemistry , molecule , physics , optics , beam (structure) , organic chemistry , chromatography , astronomy , metallurgy , composite material
X‐ray absorption spectra near Ce and Gd K‐edges of binary oxide of CexGd1‐xO(3+x)/2 (0 <= x <= 0.5) in C‐type structure solid solution were measured by use of the beamline BL01B1 at SPring‐8. Interatomic distances between rear‐earth 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 Å. Metal‐oxygen distances estimated as their linear combinations, xRCe‐O + (1‐x)RGd‐O, well agreed with those determined by X‐ray diffraction.