The influence of the focusing effect on the X-ray absorption fine structure above all the tungsten L edges in non-stoichiometric tungsten oxides
- 13 December 1993
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 5 (50) , 9423-9430
- https://doi.org/10.1088/0953-8984/5/50/023
Abstract
The role of multiple-scattering contributions in the formation of the X-ray absorption fine structure (XAFS) above tungsten L edges is discussed for the non-stoichiometric tungsten oxides WO3-x. It is found that the presence of linear or near-linear atomic chains in the WO3-x crystal structure leads, due to the focusing effect, to a strong increase in the XAFS amplitude. which results in an admixture of the L2-edge XAFS With the XAFS above the L1 edge.Keywords
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