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Figure 1 |. Raman spectra in the region 1100 to 1790cm | of the films deposited at (a) 3Wem *. (b) 4Wem "3, (c) 20 Wem ? and (d) 75 Wem *. Samples were excited at 514.5 nm. The inset shows the variation with growth pressure of the intensity ratio of the non-dia- mond to diamond Raman bands.