TITLE

Influence of a transient hexagonal phase on the microstructure and morphological stability of NiSi films

AUTHOR(S)
Van Bockstael, C.; De Keyser, K.; Van Meirhaeghe, R. L.; Detavernier, C.; Jordan-Sweet, J. L.; Lavoie, C.
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/19/2009, Vol. 94 Issue 3, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The morphological stability of NiSi is investigated when 40% of Si is mixed into an as deposited 10 nm Ni film. When annealing at 3 °C/s, scanning electron microscopy images and in situ sheet-resistance measurements show that NiSi agglomeration is delayed by more than 100 °C. In situ x-ray diffraction reveals that NiSi grows from an unusual transient hexagonal θ-nickel-silicide phase. The significant improvement of the NiSi film’s morphological stability can be related to its microstructure, with large grains and a strong texture. This peculiar microstructure is compared to the microstructure of the θ-nickel-silicide precursor by electron backscattering diffraction and pole figures.
ACCESSION #
36339280

 

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