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Characterization of a Ni/C multilayer with Fluorescence XAFS experiments at fixed standing wave field positions

Charakterisierung von Ni/C Multischichten mit Fluoreszenz XAFS-Experimenten für stehende Wellenfelder mit fester Phasenlage


Physica status solidi. A 150 (1995), S.603-612 - Abb., Lit.
ISSN: 0031-8965
ISSN: 1862-6300
Fraunhofer IWS ()
fluorescence XAFS; Fluoreszenz-XAFS; Ni/C-multilayer; Ni/C-Multischichtsystem; PLD; pulsed laser deposition

A ninefold amorphous Ni/C multilayer was characterised by X-ray reflectometry and fluorescence XAFS (X-ray Absorption Fine Structure) combined in one experiment. Synchrotron Radiation and a standing wave field which occurs for reflection at the first Bragg reflection order of the multilayer have been used. A defined shift of the standing wave field position leads to different weights of absorption and hence fluorescence contributions of the atoms within the layer. To a certain degree thus it is possible to determine the neighbourhood of the Ni-atoms in dependence of their depth position within the Ni layer.