1.
J Synchrotron Radiat
; 8(Pt 2): 460-2, 2001 Mar 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-11512814
RESUMO
Electric quadrupole transitions are revealed through the angular dependence of X-ray absorption spectra in a cubic crytal. Data collection was achieved at the iron K-edge in pyrite (FeS2) by using the angular moment method developed for X-ray Natural Circular Dichoism (XNCD) measurements. The natural linear dichroism (XNLD) was found to be around 0.5% of the edge jump. Experimental results are compared with monelectronic and multilectronic calculations. Calculations allow to quantitatively determine the proportion of quadrupolar transitions in the pre-edge structure and the anisotropy is explained in terms of structural and electronic parameters.
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Phys Rev B Condens Matter
; 52(17): 12766-12769, 1995 Nov 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-9980442
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Phys Rev B Condens Matter
; 48(13): 9491-9496, 1993 Oct 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-10007190