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Estimation of Minimum Liquidus Free Energy Concentration for Silicide and Germanide Systems

Published online by Cambridge University Press:  10 February 2011

H. G. Nam  and
N.-I. Cho
H. G. Nam
Affiliation:
Department of Electronic Engineering, Sun Moon University, Asan-si, Choongnam, 336-840, Korea
N.-I. Cho
Affiliation:
Department of Electronic Engineering, Sun Moon University, Asan-si, Choongnam, 336-840, Korea
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Abstract

Thermodynamic functions of Co-Si and Au-Si systems were studied. The validity of these functions were confirmed by successfully calculating phase diagrams. It was revealed that the composition of the first nucleated compound is close to the concentration of the minimum free energy of the liquid alloy with respect to the two solid components (ΔG) of the binary systems. In addition, the minimum ΔG concentration was found to be located by interpolating the portion of the liquidus, where the liquid alloy is in equilibrium with the two solid constituents, into the central region of the diagram where compounds exist. The minimum ΔG concentration of other silicide and germanide systems were estimated by the suggested interpolation method. A new model for predicting the first nucleated compound in silicide as well as germanide systems was proposed based on the findings.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 441: Thin Films – Structure and Morphology , 1996 , 585
Copyright
Copyright © Materials Research Society 1997

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