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A model for enthalpy of mixing has been fitted to experimental data of Castanet and Bergman for liquid Ga-Te alloys. The model (due to McCalister and Crozier) assumes the alloy melt to consist of clusters of stoichiometric components plus the excess element, and permits the molecules to be partially dissociated even at the stoichiometric composition. By assuming the existence of Ga2Te3 clusters, and adjusting two parameters (associated with fraction at 60at.% Te = 0.45 ± 0.03 and enthalpy of formation = 86 kJ/mole-molecule, the model was fitted to within the experimental error, except for a systematic deviation which is ascribed to the formation of GaTe clusters.
|Glasgow Author(s):||Johnston, Prof Sean|
|Subjects:||Q Science > QC Physics|
Q Science > QD Chemistry
|College/School:||College of Social Sciences > School of Interdisciplinary Studies|
|Journal Name:||Philosophical Magazine B|
|Journal Abbr.:||Phil. Mag. B|
|Published Online:||20 August 2006|