Thermodynamics of solid phases containing rare earth oxides

• Rare earths are used in applications involving multicomponent oxide materials.
• This paper summarizes thermodynamic properties of these diverse oxide materials.
• Ionic size is a major factor in determining the systematics of phase stability

Rare earth elements (RE) are incorporated into a large variety of complex oxide phases to provide tailored mechanical, electrical, optical, and magnetic properties. Thermodynamics control phase stability, materials compatibility in use, corrosion, and transformation. This review presents, in one compilation, the thermodynamic properties of a large number of such materials and discusses systematic trends in energetics and the factors controlling stability.

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