ISSN:
0142-2421
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
Auger electron spectroscopy investigations of various copper compounds, including oxides, cuprates and high-temperature superconducting (HTSC) YBaCuO-type materials, show that the linewidth of the Cu LVV transition for these compounds increases with the oxygen-to-copper ratio. Correspondingly, for the same compounds, the intensity ratio of the satellite (Is) and main (Im) lines in the Cu 2p3/2 line measured from XPS spectra decreases. Taking into account the mechanisms of Auger electron and x-ray photoelectron transitions, this correlation may be explained by an increase in the probability of electron transition from the O 2p to Cu 3d level in cuprates when compared with CuO. The peculiarities of Auger spectra found for YBa2Cu3O6.6-6.9 and for cuprates may be used to evaluate the quality of HTSC films by Auger microprobe.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/sia.740181003
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