ESCA studies of oxygen adsorption on nickel

Oxide films on sputtered tin-nickel alloy exposed to pure oxygen and air

“…The Full Width at Half Maximum (FWHM) of the O Is line at this exposure is 2.5 eV compared to 1.6 eV at 10~3 Torr-min exposure. This kind of peak broadening for O Is with higher oxygen exposures has been observed on oxidation of Ni by Evans et al (8), and others (10)(11)(12), and has been attributed to the presence of multiple oxide species on the surface (i.e., NiO, Ni203) or oxygen adsorption (13). The peak broadening in O Is spectra on sputtered Sn-Ni alloy surface is therefore due to the formation of a complex oxide (mixture of several species) as the exposure increases.…”

X-ray photoelectron studies on some oxides and hydroxides of cobalt, nickel, and copper

“…Oxides of nickel (10,11,(16)(17)(18)(19)(20)(21)(22)(23)(24) and copper (10, 11, 18, 19, 22, [25][26][27][28] have been the subject of a number of additional XPS studies. In the case of nickel, NiO is the only characterized oxide which has been positively identified by XPS.…”

ESCA as a Tool for Exploration of Metals’ Surface

“…In this period, new scientific journals dedicated to surface analysis were also born, such as Journal of Electron Spectroscopy and Related Phenomena, etc. Classical examples of metals' surface studies can be found already in the first volume of the first journal mentioned [3,4]. Even later, when surface analysis became a common tool in the labs of materials characterization and when the ESCA handbooks of all chemical elements were available [5,6], the application for the surface of metals remained an important research field, as it was emphasized in the first text books on surface analysis [7,8].…”