Original paper

An X-ray absorption study of doped sphalerites

Pattrick, Richard A.D.; Mosselmans, J. Frederick W.; Charnock, John M.

European Journal of Mineralogy Volume 10 Number 2 (1998), p. 239 - 250

30 references

published: Mar 31, 1998
manuscript accepted: Nov 18, 1997
manuscript received: Mar 5, 1997

DOI: 10.1127/ejm/10/2/0239

BibTeX file

ArtNo. ESP147051002005, Price: 29.00 €

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Abstract

Abstract Metal K-edge X-ray absorption spectra of Mn, Mn/(Fe), Cu/In, Cu/In/(Fe) and Cd doped zinc sulfides are reported. The Zn K-edge XANES shows that there is little change on the low-lying vacant electronic states of the Zn. Furthermore, the Zn EXAFS indicates that the coordination site of the Zn is almost unchanged by any of the dopants. Mn, Cu, In and Cd K-edge EXAFS show that the local S tetrahedra around the dopant are compressed for Cu and expanded for Mn, In and Cd. Moreover the second coordination sphere indicates that clustering occurs in the Cu/In- and Cd-doped materials. M-S bond distances of the dopants in sphalerite are: Cd-S, 2.48 Å In-S, 2.43-2.45 Å, Cu-S, 2.30-2.33 Å and Mn-S, 2.41-2.43 Å

Keywords

sphaleriteZnSdopantXASEXAFS.