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An X‐ray photoelectron spectroscopic study of gold containing a bulk antimony impurity
Author(s) -
Proctor A.,
Sherwood P. M. A.
Publication year - 1980
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740020508
Subject(s) - antimony , impurity , x ray photoelectron spectroscopy , analytical chemistry (journal) , oxygen , binding energy , chemistry , adsorption , metal , materials science , inorganic chemistry , metallurgy , atomic physics , nuclear magnetic resonance , physics , organic chemistry , chromatography
The paper reports the detection by XPS of a bulk antimony impurity in a gold foil sample, as a result of its surface segregation upon heating in vacuo at 600 °C. The O 1s spectra indicate at least two possible oxygen species present in the vicinity of the gold surface. The interaction of the surface segregated antimony with oxygen does not appear to be as is reported for calcium impurities, the antimony showing the binding energy corresponding to metal. Also the amount of surface segregated antimony impurity does not seem to be as dependent as calcium impurities on previously adsorbed or gas‐phase oxygen. The use of the carbon 1s peak rather than the gold 4f peaks is found to be a more reliable calibration reference.