Paper Title:
Large Stress Reduction Induced by sp2 Clustering in Tetrahedral Amorphous Carbon Films
| Periodical | Journal of Metastable and Nanocrystalline Materials (Volume 23) |
|---|---|
| Main Theme | Science and Technology of Nanomaterials |
| Edited by | M. Gupta and Christina Y.H. Lim |
| Pages | 39-42 |
| DOI | 10.4028/www.scientific.net/JMNM.23.39 |
| Citation | Yue Bin Zhang et al., 2005, Journal of Metastable and Nanocrystalline Materials, 23, 39 |
| Online since | January, 2005 |
| Authors | Yue Bin Zhang, S.P. Lau, S. Prawer, B.K. Tay |
| Keywords | Clustering, Raman Spectroscopy, Stress, Tetrahedral Amorphous Carbon |
| Price | US$ 28,- |
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Abstract
The intrinsic stress of tetrahedral amorphous carbon film as a function of annealing temperature is investigated. The film was deposited using the filtered cathodic vacuum arc technique and subsequently annealed at various temperatures. The stress is determined by Stoney’s equation using surface profilometry, and the microstructure is studied using atomic force microscopy, visible and ultraviolet Raman spectroscopy. It is found that as the annealing temperature increases the film stress decreases slowly up to 500 oC and then falls quickly at 600 oC. It is interesting to note that at this temperature sp3 fraction retains while sp2 clustering begins, which contributes to the sharp decrease in the stress.
