NiSi formation at the silicide/Si interface on the NiPt/Si system

G. Ottaviani*, King-Ning Tu, W. K. Chu, L. S. Hung, J. W. Mayer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


Alloy films of NiPt were e-beam codeposited on n-type Si and annealed up to 700°C in a purified- He ambient furnace. Silicide formation was monitored using MeV4 He Rutherford backscattering and glancing-angle x-ray diffraction. At low temperatures (300-350°C), Ni segregates at the Si/ silicide interface and the first phases detected are NiSi and PtSi. At intermediate temperatures (400-500°C), there is further accumulation of Ni at the Si/silicide interface, and at later stages an incursion of Pt to the interface. The barrier height increase reflects the presence of Pt. At 700°C, the Ni and Pt redistribute to form a uniform ternary.

Original languageEnglish
Pages (from-to)4903-4906
Number of pages4
JournalJournal of Applied Physics
Issue number7
StatePublished - 1 Dec 1982


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