Study of the L3 edges of ion-beam-mixed Pd-Cu alloys by X-ray absorption spectroscopy

Y. S. Lee, C. N. Whang, Y. Jeon, B. S. Choi, T. J. Han, J. J. Woo, Mark Croft

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8 Scopus citations

Abstract

X-ray absorption spectroscopy (XAS) at the L3 edge of Pd is used to investigate the electronic structure of ion-beam-mixed Pd-Cu alloys with a wide composition range (0.1 ≤ x ≤ 0.9). The formation of chemical bonds between Pd and Cu affects the occupancy and/or hybridization of the d states, and this change is revealed in the white line intensities. It is found that, within ion-beam-mixed Pd-Cu alloys, there is a substantial decrease in the area of the Pd L3 white lines upon increasing the Cu concentration. This result implies that upon alloying with Cu there is a gradual filling of the Pd d band. The amount of d-charge transfer at the Pd site of ion-beam-mixed Pd-Cu alloys has been estimated on the basis of the change within the white line.

Original languageEnglish (US)
Pages (from-to)387-391
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume129
Issue number3
DOIs
StatePublished - Aug 1997

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

Keywords

  • Charge transfer
  • Electronic structure
  • Hybridization
  • Ion-beam-mixing
  • White line
  • XANES

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