Local electronic structures in phosphorus oxyanions

L. Kövér, A. Némethy, I. Cserny, A. Nisawa, Y. Ito, H. Adachi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The local electronic structure around the core‐ionized phosphorus and oxygen atoms in solid phase Na3PO4, (NaPO3)n and Li3PO4 compounds has been studied by XPS and x‐ray excited Auger spectroscopy. Core level and valence band photoelectron spectra, as well as the O KLL Auger spectra have been measured using monochromated Al Kα excitation, while the high energy P KLV spectra have been excited using Mo‐x‐rays. From the similarity of the structures of the P KLV spectra it can be seen that the effect of the common tetrahedral symmetry is dominant while the effect due to the change of the cation is much smaller. This observation is supported by comparing the respective valence band photoelectron spectra to each other, and to the results obtained from cluster MO calculations. From the evaluation of the O KVV and O 1s spectra the oxygen Auger parameters have been derived and the 2p2p and 2s2p hole repulsion energies have been determined for each compound. The experimental values of the different Auger parameter shifts (Δα′, Δβ′) place the three oxyanions into the class of oxides, hydroxides and metallic anions instead of the class of non‐metallic anions and indicates the low electronic polarizability (similar to that of SiO2) of these phosphorus oxyanions.

Original languageEnglish
Pages (from-to)45-50
Number of pages6
JournalSurface and Interface Analysis
Volume22
Issue number1-12
DOIs
Publication statusPublished - Jul 1994

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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