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On the Existence of Multiple Equilibrium States in Strained-Layer Superlattices

Published online by Cambridge University Press:  25 February 2011

William C. Johnson
William C. Johnson*
Affiliation:
Department of Metallurgical Engineering and Materials Science, Carnegie Mellon University, Pittsburgh, PA 15213-3890.
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Abstract

Using recent results from the thermodynamics of stressed solids, two-phase coexistence in a simple binary strained-layer superlattice is examined. We show that for a given temperature and overall composition of the superlattice, there can exist more than one linearly stable, equilibrium thermodynamic state. That is, there may exist several combinations of relative thickness of the phases and corresponding phase compositions that minimize the free energy of the system. The equilibrium state observed experimentally can, therefore, be influenced by the processing path.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 103 , 1987 , 61
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

1.Williams, R O., Metall. Trans. 1 1A, 247 (1980).Google Scholar
2.Cahn, J.W. and Larche, F.C., Acta Metall. 32, 1915 (1984).Google Scholar
3.Johnson, W.C. and Voorhees, P.W., Metall. Trans. 18A, 1213 (1987).Google Scholar
4.Johnson, W.C., J. Appl. Phys., in press.Google Scholar
5.Johnson, W.C., Metall. Trans. 18A, 1093 (1987).Google Scholar
6.Robin, P.F.Y., Amer. Min. 59, 1286 (1974).Google Scholar
7.Larche, F.C. and Cahn, J.W., Acta Metall. 26, 1579 (1978).Google Scholar
8.Johnson, W.C. and Alexander, J.I.D., J. Appl. Phys. 59, 2735 (1986).Google Scholar
9.Hillard, J.E., in Phase Transformations, edited by Aaronson, H.I. (ASM, Metals Park, 1970), Ch. 12.Google Scholar