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Depth analysis of nickel thin films on silicon by glow discharge spectroscopy: The interface region
Author(s) -
Weiss Zdeněk
Publication year - 1990
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.740151210
Subject(s) - glow discharge , argon , nickel , signal (programming language) , thin film , silicon , analytical chemistry (journal) , materials science , interface (matter) , piecewise linear function , chemistry , optoelectronics , plasma , composite material , nanotechnology , metallurgy , capillary number , physics , organic chemistry , chromatography , quantum mechanics , capillary action , computer science , programming language , geometry , mathematics
Depth profiles of nickel thin films on silicon obtained with a Grimm glow discharge lamp operating at various conditions were compared. The best conditions for the profile analysis are: high argon pressure, high discharge current and low discharge voltage. The signal response at the interface was described quantitatively using piecewise linear model functions. Influence of the discharge parameters on the signal response at the interface was discussed. Interface broadening was confirmed to be caused by the crater effect, with a non‐uniform removal rate distribution across the analysed spot that does not depend on the total sputtered depth in the analysis of a homogeneous sample.