Study of Optical and Structural Characteristics of Ceria Nanoparticles Doped with Negative and Positive Association Lanthanide Elements

Table 2

Chemical analysis of the atomic concentrations of synthesized samples using X-ray photoelectron spectroscopy (XPS).

Weight ratios	O1s	Ce3d	Nd3d	Sm3d	Ho4d	Er4d
Nd
With no Ho or Er	66.03	10.70	0.44	0	0	0
With equal amount of Ho	62.38	12.57	1.32	0	1.24	0
With double amount of Ho	58.54	13.42	1.25	0	1.35	0
With equal amount of Er	60.51	13.51	1.14	0	0	1.01
With double amount of Er	63.75	11.25	1.24	0	0	1.57
Sm
With no Ho or Er	65.63	12.14	0	1.09	0	0
With equal amount of Ho	62.37	15.07	0	1.14	0.94	0
With double amount of Ho	59.77	12.24	0	0.8	1.46	0
With equal amount of Er	61.58	13.87	0	1.26	0	0.96
With double amount of Er	61.48	13.79	0	1.19	0	2.01