XPS Study of Mechanically Activated YBa₂Cu₃O_6+δ and NdBa₂Cu₃O_6+δ

Table 3

Characteristic spectral parameters of different copper compounds.

Electron orbital	CuO	CuCO3	Cu(OH)2	Cu2CO3(OH)2	Nd2BaCuO5
	Binding energy, eV
Ba 3d5/2					779.0*
Nd 4d5/2					118.2*
Cu 2p3/2	933.7 ± 1; [28–30]	934.8; [28]	934.74 ± 0.06; [29, 31]	934.7; [32]	933.5*
O 1s	529.74 ± 0.06; [30, 31]		531.24; [31]		528.6*

∗Our data.