Yb³⁺ doping and calcination temperature effect on the F_2g Raman mode of CeO₂.

Sample	FWHM (cm−1)
Annealing temperature	773 K	1273 K
Ce0.996Yb0.004O2	20.5 ± 0.2	12.8 ± 0.1
Ce0.99Yb0.01O2	20.6 ± 0.2	12.4 ± 0.1
Ce0.97Yb0.03O2	22.3 ± 0.2	14.4 ± 0.1
Ce0.95Yb0.05O2	26.6 ± 0.3	14.4 ± 0.1
Ce0.85Yb0.15O2	42.0 ± 0.6	32.0 ± 0.4
Ce0.82Yb0.18O2	42.0 ± 0.0	36.7 ± 0.4
Ce0.78Yb0.22O2	41.2 ± 0.6	—