Abstract
From Mossbauer effect, lattice constant and susceptibility measurements we show that Eu is nearly divalent in Eu(Cu,Ag,Au)(P,As,Sb). However, the LIII X-ray absorption spectra consist of a pronounced double structure, suggesting a non-integral mean Eu valence. The high-energy structure in the LIII-edge spectra is interpreted as a final-state (shake-up) effect. This finding strongly supports the existence of final-state effects in the LIII X-ray absorption spectra of divalent Eu compounds as previously reported by Sampathkumaran et al (1985) in EuPd2P2.
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