Mechanisms inducing compressive stress during electrodeposition of Ni

The evolution of stress during electrodeposition of Ni films on Au substrates has been investigated as a function of bath chemistry and deposition conditions to examine the microstructural origins of the compressive stress observed during deposition from an additive-free sulfamate bath. Three likely...

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Bibliographic Details
Published in:Journal of applied physics 2005-01, Vol.97 (1), p.014901-014901-6
Main Authors: Hearne, Sean J., Floro, Jerry A.
Format: Article
Language:English
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Summary:The evolution of stress during electrodeposition of Ni films on Au substrates has been investigated as a function of bath chemistry and deposition conditions to examine the microstructural origins of the compressive stress observed during deposition from an additive-free sulfamate bath. Three likely mechanisms for the generation of compressive stress in this system were investigated: interstitial hydrogen/impurity incorporation, capillarity stress, and a chemical-potential gradient driven atom incorporation model. Only the last model, the chemical-potential gradient model, could not be discounted as the active mechanism. However, further study is required to verify that this is the primary compressive stress generation mechanism.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1819972