Nickel Monoxide Surface Films on Ni(100)

X-ray photoelectron diffraction and low-energy electron diffraction study of the interaction of oxygen with the Ni(001) surface: c(2 × 2) to saturated oxide

“…The absolute minimum of2.4 ML that we fmd is furthermore inconsistent with the saturation coverage of 2.45 ML found recently by Pope et al using nuclear reaction analysis [18], since the presence of any reasonable attenuation in the oxide overlayer in XPS would yield a higher value than 2.45. Our value of 4.7 ML with overlayer attenuation is however, consistent with, although somewhat higher than, a very recent XPS study of 0/Ni(OOl) by Hallet al [30], who find a 4-ML thickness for the Ni0(001) orientation that we find to be dominant at saturation.…”

“…It is also worth noting in concluding our discussion of the annealed oxide that our annealing temperature of approximately 523 K is, according to a recent XPS study by Hall et al [30], probably not high enough to produce significant oxide layer thickening that can, for temperatures of 100 K or more above this, lead to oxide islands of as much as 50 A in thickness.…”

Nickelocene adsorption on single-crystal surfaces

“…The growth and surface characteristics of Ni͑100͒/NiO͑100͒ thin film substrates have previously been well studied. 13,[23][24][25][26][27] The growth of the ordered thin film of NiO͑100͒ on the Ni͑100͒ substrate was monitored with several techniques. HREELS was used to detect the characteristic Fuchs-Kliewer phonon at 69.6 meV ͑561 cm Ϫ1 ͒ 13 described more fully below.…”

Interaction of SO2 with Oxygen on Ni(100) Studied by XPS and NEXAFS

“…3 The Ni(100) crystal was purchased from Metal Crystals and Oxides and cleaned by using a standard procedure. The c(2x2)_O/Ni(100) surface was prepared by exposing the Ni (100) surface to 40 L of oxygen at 300 K. 6 (1 L corresponds to 10 −6 torr·sec exposure) The NiO(111) surface was produced by exposing the Ni (100) surface to 300 L of oxygen at 300 K. 7 Gases were introduced to the analysis chamber using a leak valve.…”