Abstract
We report the local structure of amorphous alloys CexRu100–x (x=9, 43 and 80) and a C15 Laves phase compound CeRu2 determined from an extended x-ray absorption fine structure measurements near Ru K edge and Ce K edge. The structure analyses indicate that the Ce-Ru and Ru-Ru interatomic distances of amorphous CexRu100–x are constant for all of the Ce concentration, while the Ce-Ce distance increases with increasing the Ce content. The interatomic distance of Ru-Ru in the amorphous alloy system is as same as that of the CeRu2 compound. The Ce-Ce interatomic distance of amorphous CexRu100–x is closely connected with the Ce valence.
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