Fractal Aggregates in Sputter-Deposited NbFilms
- 18 February 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 54 (7), 701-703
- https://doi.org/10.1103/physrevlett.54.701
Abstract
Fractal-like structures have been observed in sputter-deposited thin films of Nb. These structures exhibit a striking resemblance to those produced by computer simulations of diffusion-limited aggregation using the Witten-Sander model. An effective fractal dimensionality of about 1.9 has been determined from digitized photomicrographs. Our results indicate a two-stage growth process in which an initial structure with a fractal dimensionality of about 1.7 is thickened by a subsequent growth process.
Keywords
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