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ESCA study of Cu/SiO 2 and Fe/SiO 2 interfaces heated in high vacuum
Author(s) -
Hirokawa Kichinosuke,
Yokokawa Yoshio,
Oku Masaoki
Publication year - 1981
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.740030205
Subject(s) - copper , oxide , ferrous , metal , oxidation state , oxygen , inorganic chemistry , chemistry , chemical state , iron oxide , analytical chemistry (journal) , materials science , metallurgy , x ray photoelectron spectroscopy , chemical engineering , organic chemistry , chromatography , engineering
The reaction at the interfacial region of Cu/SiO 2 and Fe/SiO 2 heated in the high vacuum of an ESCA spectrometer has been studied. Copper spread slightly into SiO 2 at 500–800°C in the metallic oxidation state. Cupric oxide formed on SiO 2 changed to cuprous oxide or cuprous oxide plus copper metal and slightly diffused into the SiO 2 by heating. Iron began to react with SiO 2 at about 600°C and migrated into SiO 2 in the ferrous oxidation state. This reaction was stimulated over 800°C and may be promoted by the presence of a small amount of oxygen on the iron surface.