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Electron-Spectroscopic Studies of Thermal Stability of Pd/Nb Surfaces

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Czechoslovak Journal of Physics Aims and scope

Abstract

The room-temperature growth of Pd on a clean quasiamorphous, nanostructured Nb surfaces and thermal stability of Pd/Nb interface in the temperature range (295-660) K have been studied by X-ray photoelectron spectroscopy (XPS) and X-ray induced Auger electron spectroscopy. The measured spectra of Pd (3d) and Nb (3d) electrons indicate presence of a surface Pd-Nb alloy-like phase in the region of submonolayer Pd coverage at room temperature. The Pd (3d) core level shifts can be explained in terms of initial state effects. For multilayer deposits an intermetallic phase is observed in the Pd/Nb interface at room temperature. Inward diffusion of Pd occurs folowed by the formation of three-dimensional alloy at temperatures above ≈ 500 K.

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Authors and Affiliations

  1. Acad. Sci. CR, J. Heyrovský Institute of Physical Chemistry, 182 23, Praha 8, Czech Republic

    I. Jirka & Z. Bastl

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  1. I. Jirka
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  2. Z. Bastl
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Jirka, I., Bastl, Z. Electron-Spectroscopic Studies of Thermal Stability of Pd/Nb Surfaces. Czechoslovak Journal of Physics 53, 11–17 (2003). https://doi.org/10.1023/A:1022343201504

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