Mixing and silicide formation during Xe-ion beam irradiations of Ta/Si bilayers
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Thin Ta layers deposited on Si (100) substrates were irradiated with 475 keV Xe+ ions to fluences of (0.5-2) x 10(16) ions/cm(2) at temperatures between room temperature and 400 degreesC. By means of Rutherford Backscattering Spectrometry, the interface mixing and tantalum silicide formation were monitored as function of the ion fluence. TaSi2 phase formation was verified using X-ray diffraction. The interface broadening variance was found to depend linearly on the ion fluence and was explained with the help of a compound formation model involving global thermal spikes.
Извор:Physica Status Solidi. B: Basic Research, 2000, 222, 1, 295-302
ISSN: 0370-1972 (print)