Both (CePr)O2-δ and (CePrLa)O2-δ retain cubic fluorite structure to 30 GPa with a 9-16 GPa anomaly from local distortions and bond bending, while the La-containing compound amorphizes above 22 GPa.
Both materials exhibit a distinctive compression anomaly in the 9 –16 GPa range, observed as a plateau in their compressibility and a slope change in the RE -O Raman mode
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Comparative high-pressure study on rare-earth entropy fluorite-type oxides
Both (CePr)O2-δ and (CePrLa)O2-δ retain cubic fluorite structure to 30 GPa with a 9-16 GPa anomaly from local distortions and bond bending, while the La-containing compound amorphizes above 22 GPa.