Vaporization thermodynamics of the Ga2O3 ZnO system was studied by the Knudsen effusion technique in combination with mass spectrometric analysis of the vapor phase in the temperature range 1360 1460 K. The incongruent character of vaporization processes in the whole composition range of the Ga2O3 ZnO system was established. The vapor composition and the partial pressures of the gas phase species were determined. The p x projection of the Ga2O3 ZnO phase diagram at 1410 K was constructed. The standard molar enthalpy of formation of ZnGa2O4 at 298 K was found to be 1472.8 +- 26.6 kJ mol 1.
Compounds
#
Formula
Name
1
Ga
gallium
2
Zn
zinc
3
O2
oxygen
4
OZn
zinc(II) oxide
5
Ga2O4Zn
gallium zinc oxide (ZnGa2O4)
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.
Type
Compound-#
Property
Variable
Constraint
Phase
Method
#Points
POMD
4
Vapor or sublimation pressure, kPa ; Crystal
Temperature, K; Crystal
Crystal
Gas
Calculated from knudsen effusion weight loss
1
RXND
1
2
5
3
Molar enthalpy of reaction, kJ/mol
From vapor pressure measurements (Knudsen effusion)