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- W2103227932 abstract "We have carried out direct diffusion measurements of Cu into Ta2N. Thin films of 50nm thickness of Cu were grown onto a thick Ta2N layer of 1µm deposited by Ionized Metal Plasma (IMP). Samples were annealed in a rapid thermal system from temperatures ranging from 400°C to 750°C for periods of 180s. Results based on sheet resistance measurements, x-ray diffraction analyses, atomic force microscopy measurements and secondary ion mass spectroscopy analyses consistently follow a transformation of amorphous Ta2N to a crystalline phase and finally forming Cu-Ta-O compounds at higher annealing temperatures. The copper and tantalum nitride diffusion profile was performed using Secondary Ion Mass Spectroscopy. The Cu diffusion coefficients in Ta2N can be described by 1.5778 × 10 -12 exp (-0.4066 eV/kT) cm 2 /s. To assure reliability, the extent of both diffusions should be considered in device design and processing." @default.
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- W2103227932 date "2002-05-01" @default.
- W2103227932 modified "2023-09-22" @default.
- W2103227932 title "Study of copper diffusion into tantalum nitride (Ta/sub 2/N) by rapid thermal annealing (RTA)" @default.
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- W2103227932 doi "https://doi.org/10.1109/spi.2002.258309" @default.
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