Journal of Phase Equilibria

, Volume 22, Issue 2, pp 105–113 | Cite as

Thermodynamic assessment of the lanthanum-oxygen system

  • A. Nicholas Grundy
  • Bengt Hallstedt
  • Ludwig J. Gauckler
Basic And Applied Research


The data on the thermodynamic properties of La2O3 have been reviewed and optimized using the CALPHAD method. A consistent set of parameters is presented. Data on this system are scarce and, with the exception of a few datapoints on substoichiometric La2O3−x and one measurement of oxygen solubility in La metal, limited to the properties of pure La and pure La2O3. Using the optimized parameters, a tentative phase diagram and stability diagram have been calculated.


Interstitial Site Stability Diagram Oxygen Solubility Lanthanum Oxide Molar Gibbs Energy 
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Copyright information

© ASM International 2001

Authors and Affiliations

  • A. Nicholas Grundy
    • 1
  • Bengt Hallstedt
    • 1
  • Ludwig J. Gauckler
    • 1
  1. 1.Department of Materials, Institute of Nonmetallic Materials, Swiss Federal Institute of TechnologyETH ZurichZurichSwitzerland

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