Probe for Spin- and Valence-Selective X-ray Absorption Fine Structure Spectroscopy: EuLγ4 Emission

EuLγ4 emission spectra of EuS, EuF3, EuCl3, and Eu2O3 were measured using a multicrystal, multidetector spectrometer. Splitting of the EuLγ4 band was observed in the EuS spectra and attributed to exchange interactions between Eu5p and Eu4f. It was shown that because of this splitting, the EuLγ4 emis...

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Published inAnalytical chemistry (Washington) Vol. 81; no. 4; pp. 1522 - 1528
Main Authors Hayashi, Hisashi, Kawamura, Naomi, Mizumaki, Masaichiro, Takabatake, Toshiro
Format Journal Article
LanguageEnglish
Published American Chemical Society 15.02.2009
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Summary:EuLγ4 emission spectra of EuS, EuF3, EuCl3, and Eu2O3 were measured using a multicrystal, multidetector spectrometer. Splitting of the EuLγ4 band was observed in the EuS spectra and attributed to exchange interactions between Eu5p and Eu4f. It was shown that because of this splitting, the EuLγ4 emission could be used for performing spin-selective measurements. This emission exhibited a large chemical shift (∼5 eV), depending on the valence state of a compound. The applicability of this emission to valence-selective X-ray absorption fine structure spectroscopy was demonstrated through partial fluorescence yield measurements performed on a 1:1 mixture of EuS and Eu2O3 and on a valence-fluctuating compound Eu3Pd20Ge6.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac802145t