Figure 2

FESEM images of (a) the as-deposited CeO2 sample (b) the Ce2Ti2O7 sample (c) the as-deposited CeO2 sample with NH3 plasma treatment for 3 min (d) the Ce2Ti2O7 sample with NH3 plasma treatment for 3 min.
FESEM images of (a) the as-deposited CeO2 sample (b) the Ce2Ti2O7 sample (c) the as-deposited CeO2 sample with NH3 plasma treatment for 3 min (d) the Ce2Ti2O7 sample with NH3 plasma treatment for 3 min.