Abstract
We report Ni L 2.3 X-ray absorption spectra as measured from bulk ingots of Ni 2Si and NiSi 2. A similar amount of unoccupied 3 d character if found in the electronic structure of both silicides regardless of the differences occuring in the coordination local to the Ni sites. This is discussed in terms of the results of calculations of the partial density of states of Ni silicides and contrasted with recently reported ultraviolet inverse photoemission data which suggest complete depletion of the unoccupied Ni 3 d-related states upon moving from Ni 2Si to NiSi 2.
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