Ultraviolet photoelectron spectroscopy of Pd-Si glasses |
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Authors: | B.J. Waclawski D.S. Boudreaux |
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Affiliation: | National Bureau of Standards, Washington, DC 20234, USA;Allied Chemical Corporation, Morristown, NJ 07960, USA |
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Abstract: | In order to determine systematic changes in the density of states with alloy composition, photoelectron spectra at hv=21.2 eV were measured for several amorphous alloys based on the well-known Pd-Si glass system. Three binary alloys with 15, 20, and 25 at. % Si, two ternaries, Pd80 Si17 Cu3 and Pd80 Si14 Cu6, and polycrystalline Pd were analyzed. Compared to Pd, both the density of states at the Fermi energy and the d-band width are reduced in the glasses. The d-bands display an overall shift of 0.4 eV over the range of alloy compositions studied. Partial agreement with recent density of states calculations was obtained. |
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