Valence Band and Core Levels of Ce5Ni2Si3 Crystal Studied by X-ray Photoemission Spectroscopy |
| T. Toliński a, A. Kowalczyk a, G. Chełkowska b, M. Mihalik c and M. Timko c
a Institute of Molecular Physics, PAS, M. Smoluchowskiego 17, 60-179 Poznań, Poland b Institute of Physics, Silesian University, Uniwersytecka 4, 40-007 Katowice, Poland c Insitute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04353 Košice, Slovakia |
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| Received: 9 07 2007; |
| The crystal of Ce5Ni2Si3 was prepared by the Czochralski method. The X-ray photoemission spectroscopy was measured for the valence band and the core levels. Based on the Ce(3d) doublet and its satellites a small value of the hybridization parameter of the f-states with the conduction electrons Δ=4 meV and the f-occupancy nf close to 1 were found. X-ray photoemission spectroscopy shows that the region between 0 and 3 eV is predominated by the Ni(3d) and Ce(4f) peaks. Some features of the multiplet structure of the Ce(4f) states are also visible close to the Fermi level. |
| DOI: 10.12693/APhysPolA.113.327 PACS numbers: 71.20.Eh, 82.80.Pv |