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Bombardment-Induced Mixing of Mo Films on Si

Published online by Cambridge University Press:  26 February 2011

AH. Van Ommen ,
M.F.C. Willemsen ,
PR. Boudewijn  and
A. H. Reader
AH. Van Ommen
Affiliation:
Philips Research Laboratories P.O.B. 80 000. 5600 JA Eindhoven., The Netherlands
M.F.C. Willemsen
Affiliation:
Philips Research Laboratories P.O.B. 80 000. 5600 JA Eindhoven., The Netherlands
PR. Boudewijn
Affiliation:
Philips Research Laboratories P.O.B. 80 000. 5600 JA Eindhoven., The Netherlands
A. H. Reader
Affiliation:
Philips Research Laboratories P.O.B. 80 000. 5600 JA Eindhoven., The Netherlands
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Abstract

We studied ion beam mixing of thin Mo films on monocrystalline Si by As “implantation at room temperature. The results differ significantly from those obtained for implantation at elevated temperature (T > 200°C). where ion beam mixing results in hexagonal MoSi2 formation. Room temperature implantation results in the formation of an amorphous mixed layer. The composition of this layer varies with depth from Mo-rich to Si-rich. The mixed layer thickness increases linearly with implanted dose and energy. An increase of the implantation temperature with 100°C gives rise to a factor of 2 larger mixed layer thickness and to the formation of amorphous MoSi2 near the interface with Si. These phenomena indicate that at elevated temperature ion beam mixing is controlled by radiation-enhanced diffusion whereas, at room temperature ballistic mixing is the dominant mechanism.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 54: Symposium E – Thin Films–Interfaces and Phenomena , 1985 , 221
Copyright
Copyright © Materials Research Society 1986

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References

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