Anderson, T. J. (UFL) Boettinger, W. J. Davydov, A. V. Kattner, U. R. (METALLURGY DIVISION - 855)
Thermodynamic Assessment of the Gallium - Nitrogen System
Physica Status Solidi A - November 01, 2001

Thermochemical and phase diagram data for the Ga-N system were assessed by employing the CALPHAD method. A consistent model representation of available thermodynamic properties agrees well with the critically evaluated experimental data. Thermodynamic extrapolation/interpolation of these data was applied to estimate the sublimation and melting characteristics of the GaN compound: at atmospheric pressure of nitrogen, gallium nitride sublimates incongruently by decomposing into nitrogen-rich gas and gallium-rich liquid, but can melt congruently at high nitrogen pressure (~4.9 GPa).
Keywords: phase diagram , semiconductors , assessment Ga-N
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