NdNi4B and DyNi4B compounds studied by X-ray photoemission spectroscopy

  • Toliński T
  • Chełkowska G
  • Kowalczyk A
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Abstract

The hexagonal NdNi4B and DyNi4B compounds were studied by X-ray photoemission spectroscopy. Both valence band and core level spectra were analyzed. A comparison of the valence bands showed that the Dy(4f) levels were well localized, whereas Nd(4f) levels overlapped strongly with the Ni(3d) peak below the Fermi level. The 3d5/2and 3d3/2bands of NdNi4B revealed additional satellites. The values of the 3d spin-orbit splitting ELSwere equal to 22.8 eV for R=Nd and 38 eV for R=Dy. The coupling between the f-orbitals and the conduction states, Δ ≈ 23 meV, was estimated for NdNi4B basing on the Gunnarsson-Schönhammer model. © 2002 Elsevier Science Ltd. All rights reserved.

Author-supplied keywords

  • A. Magnetically ordered materials
  • D. Electronic band structure
  • E. Photoelectron spectroscopies

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Authors

  • T. Toliński

  • G. Chełkowska

  • A. Kowalczyk

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