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Title: Fast electromigration crack in nanoscale aluminum film

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4892676· OSTI ID:22314620
 [1]
  1. St. Petersburg State Polytechnical University, Saint-Petersburg (Russian Federation)

The current-induced breakage of 20 nm thin aluminum layers deposited onto capacitor grade polypropylene (PP) films is experimentally studied. Biexponential current pulses of different amplitude (10–15 A) and duration (0.1–1 μs) were applied to the samples. Breakage occurred after fast development of electromigrating ∼200 nm-wide cracks with initial propagation velocity of ∼1 m/s under a high current density of ∼10{sup 12 }A/m{sup 2}. The cracks stopped when their lengths reached 250–450 μm. This behavior is explained by the balance of electromigration and stress-induced atomic fluxes.

OSTI ID:
22314620
Journal Information:
Journal of Applied Physics, Vol. 116, Issue 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
Country of Publication:
United States
Language:
English