fig3

Figure 3. (A) XPS spectra of Cu 2p for CuAl and CuNiAl; (B) XPS spectra of Ni 2p for NiAl, and CuNiAl. XPS: X-ray photoelectron spectroscopy.

Figure 3. (A) XPS spectra of Cu 2p for CuAl and CuNiAl; (B) XPS spectra of Ni 2p for NiAl, and CuNiAl. XPS: X-ray photoelectron spectroscopy.
 
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