Abstract
Substrate curvature measurements were used to study stress relaxation in Al-Si-Cu films at temperatures between 45 and 165 °C. Dislocation glide with an average activation energy, resp. athermal flow stress of 1.7 ± 0.2 eV, resp. 600 ± 200 MPa could describe the relaxation data for temperatures up to 120 °C well. Stress relaxation at 92 °C was found to progress much slower in 1 μm wide nitride passivated lines than in thin films or unpassivated lines.
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References
J. F. Smith and I. Wagner, Advanced Aluminum Metallization. Part I: Aluminum Thin Film Properties, (1991 MRC Thin Film School), 2.
F.M. d’Heurle and P.S. Ho in Thin Films: Interdiffusion and Reactions, ed. by J. Poate, K. Tu and J. Mayer (N.Y.), 293 (1978).
H. Okabayashi, Mat. Sci. Eng. R11 (5), 191–241 (1993).
C.A. Volkert, C.F. Alofs and J.R. Liefting, J. Mater. Res. 9 (5), 1147 (1994).
W.D. Nix, Metall. Trans A 20A, 3317 (1989).
D.S. Gardner and P.A. Flinn, IEEE Trans, on El. Dev. 35 (12), 2160 (1988).
H.J. Frost and M.F. Ashby in Deformation Mechanism Maps (Pergamon Press, Oxford, 1982), Chapter 2.
Mechanical behavior of Materials, ed. by F.A. Clintock and A.S. Argon (Addison-Wesley Company, Reading, 1966), 276–281.
Aluminum. Properties and Physical Metallurgy, ed. by J.E. Hatch (ASM, Metal Parks, Ohio), 47 (1984).
G.M. Clarke in Statistics and Experimental Design. 2nd edition (Edward Arnold Ltd.), 104 (1980).
D. Hull and D.J. Bacon, Introduction to Dislocations. 3th edition (Pergamon Press, Oxford, NY), 242 (1984).
T. Hosoda, H. Niwa, H. Yagi and H. Tsuchikawa, Proc. 1991 IRPS (IEEE), 77 (1991).
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Witvrouw, A., Proost, J., Deweerdt, B. et al. Stress Relaxation in Al−Si−Cu Thin Films and Lines. MRS Online Proceedings Library 356, 441–446 (1994). https://doi.org/10.1557/PROC-356-441
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DOI: https://doi.org/10.1557/PROC-356-441