A Soft X-ray Appearance Potential Spectroscopy Study of the Oxidation of Nickel

1974 ◽  
Vol 29 (5) ◽  
pp. 768-772 ◽  
Author(s):  
G. Ertl ◽  
K. Wandelt
Keyword(s):  
Binding Energy ◽  
Fermi Level ◽  
Electronic Properties ◽  
Oxidation State ◽  
Metallic Nickel ◽  
Spectroscopy Study ◽  
Continuous Change ◽  
X Ray ◽  
Appearance Potential

Abstract Variations of the electronic properties of nickel during the first stages of oxidation were studied by means of the soft x-ray appearance potential spectroscopy (APS). The spectra consist of a superposition of contributions from metallic nickel and from NiO and yield no evidence for a continuous change of the oxidation state of the Ni atoms. The binding energy of the 2p3/2-electrons in metallic nickel was found to be 851 eV and is increased in NiO by 1.4 eV. It is concluded from the shape of the APS peaks that with Ni above the Fermi level 3d- and 4s-bands are superimposed whereas with NiO these are separated in energy.

Soft x‐ray appearance potential spectroscopy study of pure rare‐earth metals with a sealed‐off analyzer tube

1980 ◽  
Vol 17 (1) ◽  
pp. 211-213 ◽  
Author(s):  
Z. Y. Hua ◽  
J. Zhuge ◽  
C. S. Fan ◽  
H. X. Chen ◽  
X. L. Pan ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Spectroscopy Study ◽  
X Ray ◽  
Appearance Potential

Hydrogen as a Modifier of the Structure and Electronic Properties of Platinum in Acidic Zeolite LTL: A Combined Infrared and X-ray Absorption Spectroscopy Study

1995 ◽  
Vol 99 (43) ◽  
pp. 16067-16075 ◽  
Author(s):  
Marius Vaarkamp ◽  
Barbara L. Mojet ◽  
Menno J. Kappers ◽  
Jeff T. Miller ◽  
Diek C. Koningsberger
Keyword(s):  
Electronic Properties ◽  
Absorption Spectroscopy ◽  
Spectroscopy Study ◽  
X Ray ◽  
X Ray Absorption

Electron Spectroscopic Studies of the Oxidation of Ni/Pd Alloys

1976 ◽  
Vol 31 (2) ◽  
pp. 205-210 ◽  
Author(s):  
K. Wandelt ◽  
G. Ertl
Keyword(s):  
Binding Energy ◽  
Auger Electron Spectroscopy ◽  
Electron Spectroscopy ◽  
Auger Electron ◽  
Spectroscopic Studies ◽  
Oxide Layers ◽  
X Ray ◽  
Appearance Potential

Abstract The oxidation of polycrystalline samples of Ni/Pd-alloys at 600 °C and 2·10-5 Torr O2 has been investigated by means of Auger electron spectroscopy and soft x-ray appearance potential spectroscopy. The clean surfaces are enriched by Pd; and with increasing Pd content the binding energy of the Ni 2p-core levels was found to decrease continuously by 0.7 eV. After completion of the oxidation identical overlayers were formed on all samples (except on pure Pd!) which were identified to consist of NiO. Within the depth probed by the applied techniques (≲20 Å) the rate of oxidation was found to increase with increasing Pd content, which is in contrast to the behaviour to be expected for the growth of thick oxide layers after the formation of a coherent NiO overlayer.

scholarly journals Bulk and surface electronic properties ofSmB6: A hard x-ray photoelectron spectroscopy study

2017 ◽  
Vol 96 (15) ◽  
Author(s):  
Y. Utsumi ◽  
D. Kasinathan ◽  
K.-T. Ko ◽  
S. Agrestini ◽  
M. W. Haverkort ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Photoelectron Spectroscopy ◽  
Spectroscopy Study ◽  
X Ray

scholarly journals Electronic properties of a‐CNx thin films: An x-ray-absorption and photoemission spectroscopy study

2005 ◽  
Vol 98 (3) ◽  
pp. 033708 ◽  
Author(s):  
S. C. Ray ◽  
C. W. Pao ◽  
J. W. Chiou ◽  
H. M. Tsai ◽  
J. C. Jan ◽  
...  
Keyword(s):  
Thin Films ◽  
Electronic Properties ◽  
Photoemission Spectroscopy ◽  
Spectroscopy Study ◽  
X Ray ◽  
X Ray Absorption

X-RAY PHOTOELECTRON STUDY OF Bi2Sr2CaCu2-xCoxO~8

1999 ◽  
Vol 13 (13) ◽  
pp. 1655-1662
Author(s):  
N. K. MAN ◽  
KAMLESH KUMARI ◽  
S. VENKATESH ◽  
T. D. HIEN ◽  
N. K. SINH ◽  
...  
Keyword(s):  
Binding Energy ◽  
Photoelectron Spectroscopy ◽  
Hole Concentration ◽  
Core Level ◽  
Spectroscopy Study ◽  
Cobalt Doping ◽  
X Ray ◽  
Co Concentration ◽  
Photoelectron Study

An X-ray photoelectron spectroscopy study has been performed on well characterized Bi 2 Sr 2 CaCu 2-x Co x O ~8 (x=0, 0.02 and 0.1) samples. There is a shift in the Sr binding energy with Co concentration, which is related to the change in T c . This relationship can be understood by the change of hole concentration in the CuO 2 planes as a result of Cobalt doping. The results of Bi 4f and Co 2p core level spectra are also discussed in detail.

scholarly journals The adsorption of Cu on the CeO2(110) surface

2017 ◽  
Vol 19 (40) ◽  
pp. 27191-27203 ◽  
Author(s):  
Arunabhiram Chutia ◽  
Emma K. Gibson ◽  
Matthew R. Farrow ◽  
Peter P. Wells ◽  
David O. Scanlon ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Fine Structure ◽  
Electronic Properties ◽  
Oxidation State ◽  
Density Functional ◽  
Functional Theory ◽  
Copper Species ◽  
X Ray ◽  
Solvent Environment ◽  
X Ray Absorption

A detailed density functional theory (DFT) study coupled with extended X-ray absorption fine structure (EXAFS) experiments on the geometrical and electronic properties of copper species on CeO2 surface demonstrating the effects of oxidation state and solvent environment.

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