XANES Pb LIII spectra of mixed-valence compound: Minium, Pb3O4

Details XANES Pb LIII spectra of mixed-valence compound: Minium, Pb3O4 XANES Pb LIII spectra of mixed-valence compound: Minium, Pb3O4

2003-12-28

arxiv.org/abs/cond-mat/0312663v1

Physics

Condensed Matter

Materials Science

Keywords: lead oxides, electronic structure, XANES, NMR

Scientific paper

Mixed-valence compound Pb3O4 (minium) has been studied using X-ray absorption near-edge structure (XANES) spectroscopy and DFT calculations. In spite of presence of two valence states of lead [Pb(II) and Pb(IV)], the XANES spectrum of studied system is corresponding to apparently unified, an intermediate valence state of Pb. On the other hand, the 207Pb NMR spectra definitely show two different spectral bands corresponding to different Pb2+ and Pb4+ ions in Pb3O4 crystal structure. The explanation of this contradiction is related to the basics of XANES and NMR spectroscopy.

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