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Proceedings Paper

Study of Pd/Y based multilayers using high energy photoemission spectroscopy combined with x-ray standing waves
Author(s): M.-Y. Wu; V. Ilakovac; J.-M. André; K. Le Guen; A. Giglia; J.-P. Rueff; Q.-S. Huang; Z.-S. Wang; P. Jonnard
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Paper Abstract

We use hard x-ray photoemission spectroscopy combined with x-ray standing waves to characterize a series of Pd/Y multilayers designed to work in the 7.5-11 nm wavelength range. The samples, prepared by magnetron sputtering, are deposited either with or without nitrogen introduced in the sputtering gas. The aimed period of the samples is 4 nm. The experiments consist in obtaining the core level spectra of the various elements for a series of grazing angles. The angular scan is made in the range given by the Bragg law, the multilayer period and the incident photon energy. Given the period of the multilayer and the presence of a 2.5 nm-thick B4C capping layer, the photon energy is chosen to be 10 keV in order to probe the first 5-6 periods of the stack. Thus the Bragg angle is a little less than 1°. Rotating the sample enables putting the nodes of the electric field at some particular location of the stack, thus to make the excitation depth-selective, probing one interface or another or the center of one given layer. The changes of the chemical shift in the Pd 2p and 3d, Y 2p and 3d, O 1s, N 1s, C 1s and B 1s as a function of the angle, that is to say as a function of the location in the stack will give information about the possible interfacial process taking place in the Pd/Y multilayers.

Paper Details

Date Published: 31 May 2017
PDF: 7 pages
Proc. SPIE 10235, EUV and X-ray Optics: Synergy between Laboratory and Space V, 102350F (31 May 2017); doi: 10.1117/12.2265630
Show Author Affiliations
M.-Y. Wu, Sorbonne Univ., UPMC Univ. Paris 06, Lab. de Chimie Physique - Matière et Rayonnement, CNRS (France)
V. Ilakovac, Sorbonne Univ., UPMC Univ. Paris 06, Lab. de Chimie Physique - Matière et Rayonnement, CNRS (France)
J.-M. André, Sorbonne Univ., UPMC Univ. Paris 06, Lab. de Chimie Physique - Matière et Rayonnement, CNRS (France)
K. Le Guen, Sorbonne Univ., UPMC Univ. Paris 06, Lab. de Chimie Physique - Matière et Rayonnement, CNRS (France)
A. Giglia, CNR, Istituto Officina dei Materiali (Italy)
J.-P. Rueff, Sorbonne Univ., UPMC Univ. Paris 06, Lab. de Chimie Physique - Matière et Rayonnement, CNRS (France)
Synchrotron SOLEIL (France)
Q.-S. Huang, Tongji Univ. (China)
Z.-S. Wang, Tongji Univ. (China)
P. Jonnard, Sorbonne Univ., UPMC Univ. Paris 06, Lab. de Chimie Physique - Matière et Rayonnement, CNRS (France)


Published in SPIE Proceedings Vol. 10235:
EUV and X-ray Optics: Synergy between Laboratory and Space V
René Hudec; Ladislav Pina, Editor(s)

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