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. 2022 Jun 25;12(13):2188. doi: 10.3390/nano12132188

Figure 3.

Figure 3

XPS spectrum of Co2p and O1s of thin film annealed (a,b) at 550 °C for 1 h 20 min in Ar; (c,d) at 650 °C for 1 h 20 min in Ar.