Thermodynamics of the Al-Ga-N sub(2) system

Thermodynamics of the Al-Ga-N sub(2) system

The thermodynamic properties of the Al-Ga-N sub(2) system under high N sub(2) pressure up to 10 kbar and 1800 degree C are investigated. On the basis of the experimental p-T growth conditions for (Al,Ga)N crystals, the standard Gibbs free energy as well as the standard enthalpy and entropy of format...

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Veröffentlicht in:Journal of crystal growth 2010-09, Vol.312 (18), p.2579-2584
Hauptverfasser: Belousov, Andrey, Karpinski, J, Batlogg, B
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum
Crystal growth
Crystals
Entropy of formation
Gibbs free energy
Mathematical analysis
Phase diagrams
Thermodynamic properties
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Zusammenfassung:The thermodynamic properties of the Al-Ga-N sub(2) system under high N sub(2) pressure up to 10 kbar and 1800 degree C are investigated. On the basis of the experimental p-T growth conditions for (Al,Ga)N crystals, the standard Gibbs free energy as well as the standard enthalpy and entropy of formation of the Al sub(x)Ga sub(1-x)N crystals as a function of composition x were calculated. The a sub(N2-T) and x-T phase diagrams for (Al,Ga)N are presented.
ISSN:0022-0248
DOI:10.1016/j.jcrysgro.2010.04.016