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The non-equilibrium formation of InxGa1−xSbyAs1−y alloys from supercooled liquid solutions

V A Elyukhin1, J Martinez-Juarez2, R Peña-Sierra1 and B L Rivera Flores1

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Modelling of the non-equilibrium crystallization of InxGa1−xSbyAs1−y alloys is presented. Formation of the alloy lattice matched to the GaSb or InAs substrate from supercooled liquid solutions is considered. Non-equilibrium crystallization is described by the minimum condition of the Helmholtz free energy of the non-equilibrium heterogeneous system. A simple solution model is used for the liquid and solid phases. The differences in the compositions of the GaSb- and InAs-rich alloys crystallized from supercooled solutions on 10 °C and saturated liquid solutions are demonstrated.


PACS

64.70.D- Solid–liquid transitions

65.40.G- Other thermodynamical quantities

Subjects

Condensed matter: structural, mechanical & thermal

Dates

Issue 22 (9 June 2004)

Received 24 September 2003

Published 21 May 2004



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