Stress evolution kinetics in ultra thin sputtered AU films

Quanmin Su, Cecile Bailly, Manfred Wuttig, Sean Corcoran, Karl Sieradzki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The stress and microstructure of a thin film evolve in time if the deposition is interrupted or terminated. To establish the parameters which control the kinetics of both processes, ultra thin Au layers were sputter deposited on Si membranes and the stress evolution was monitored by a vibrating membrane technique. The evolution of the surface morphology was studied by scanning tunnelling microscopy. Aging after the termination of each deposition causes stress evolution towards higher tension which, around ambient temperature, follows an exponential law with a characteristic relaxation time of the order of tenths of seconds. This time was found to depend strongly on the accumulated film thickness as well as the surface morphology. The intrinsic stress of the depositing layer increases with the coverage of the film on the substrate. Scanning Tunnelling Microscopy shows that the film grows in a Volmer-Weber mode and that the average stress reaches a sharp maximum as the film become continuous.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Pages69-74
Number of pages6
Volume356
StatePublished - 1995
Externally publishedYes
EventProceedings of the 1994 MRS Fall Meeting - Boston, MA, USA
Duration: Nov 28 1994Dec 1 1994

Other

OtherProceedings of the 1994 MRS Fall Meeting
CityBoston, MA, USA
Period11/28/9412/1/94

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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