Journal
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
Volume 97, Issue 11, Pages 1495-1501Publisher
WALTER DE GRUYTER GMBH
DOI: 10.3139/146.101411
Keywords
phase diagram; assessment of thermodynamic parameters; perovskite structure; sublattice model
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The thermodynamic parameters of the systems La2O3-Al2O3 and La2O3-Y2O3 are assessed using the Calphad technique. The available phase equilibrium data and calorimetric measurements for the LaAlO3, perovskite phase have been used. The calculated phase diagrams are in reasonable agreement with experimental results. However, experimental data for the La2O3-Y2O3 system demonstrated large uncertainty and new experimental study of solid state reactions would be useful to verify the calculated diagram. Experimental investigations of thermodynamic properties are necessary for both systems to verify the calculated phase diagrams and thermodynamic properties.
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