Xunliang Ding, Zhonglie Wang, Yahong Qian. An investigation of the effect of oxygen impurity on the formation of WSi2 and its properties by means of 16O (α, α)16O resonance scattering[J]. Nuclear techniques, 1987, 10(9): 15-19,61.
Xunliang Ding, Zhonglie Wang, Yahong Qian. An investigation of the effect of oxygen impurity on the formation of WSi2 and its properties by means of 16O (α, α)16O resonance scattering[J]. Nuclear techniques, 1987, 10(9): 15-19,61.DOI:
The oxygen concentration and depth profile in the Si-W multiplelayer samples were measured by using the
16
O (
α
α
)
16
O resonance scattring at 3.042 MeV. The reaction between tungsten and silicon and the formed WSi
2
by ion beam mixing were studied as a function. of the concentrations of oxygen impurity. It has been found that at a low oxygen content
hexagonal WSi
2
was formed during the radiation of samples at 350℃ with As
+
. The silicide was transformed into tetragonal WSi
2
at 700℃ annealing. At higher oxygen content
hexagonal WSi
2
was not observed. The tetragonal WSi
2
was formed at 950℃ annealing. The tungsten and silicon was mixed uniformly and the formed WSi
2
films with larger grains have lower resistivities in the samples which contain lower oxygen content
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references
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