J C Woicik

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The atomic-scale structure of Zn2+ incorporated at the CaCO 3 (101 :4) surface by adsorption from solution was determined by X-ray standing wave triangulation and surface extended X-ray absorption fine structure spectroscopy. At low coverage (approximately 0.1 ML), Zn2+ substitutes for Ca2+ in the surface layer. Structural relaxation of the adjacent(More)
We have measured the site-specific valence electronic structure of ␣-Fe 2 O 3 by using a spatially modulated x-ray standing wave as the excitation source for photoemission. Contributions to the valence-band density of states from oxygen and iron ions are separated by this method. Both a bonding and nonbonding state originating from oxygen ions are obtained.(More)
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