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Epitaxial Formation of Rare Earth Silicides by Rapid Annealing

Published online by Cambridge University Press:  26 February 2011

J. A. Knapp  and
S. T. Picraux
J. A. Knapp
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
S. T. Picraux
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
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Abstract

Rapid electron beam and lamp heating have been used to form thin epitaxial films of rare-earth suicides by reacting overlayers of the rare earths with (111) Si substrates. Of the metals Y, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, all but Gd are found to form epitaxial suicide layers by rapid solid-phase reaction, while suicides of Gd, Dy, Tm, Yb and Lu have been formed epitaxially by liquid phase reaction. For all but Er this is the first demonstration of epitaxial growth on Si. Details obtained from ion beam channeling analysis and transmission electron microscopy confirm the expected epitaxial structure and also show that the Si vacancies in the suicide form an ordered superlattice, rather than a random array as had been assumed before.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 54 , 1985 , 261
Copyright
Copyright © Materials Research Society 1986

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Footnotes

*

This work performed at Sandia National Laboratories supported by the U.S. Department of Energy under contract number DE-AC04-76DP00789.

References

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