Abstract
We examined the possibility of nucleation and growth of diamond via a hydrogen-free vapor phase route of pulsed laser ablation of a graphite target in a low-pressure pure oxygen atmosphere. The present evidences from microscopic, diffraction and spectroscopic techniques indicate that high-quality (111)-oriented diamond crystals could be nucleated and grown on ultra smooth sapphire (single crystal α-Al2O3) substrates at the temperatures lower than 600°C under the optimized growth conditions of oxygen pressure (around 0.15 Torr) and laser ablation (pulsed laser fluence of 3 × 108 W/cm2 at 5 Hz).
Original language | English |
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Pages (from-to) | 383-386 |
Number of pages | 4 |
Journal | Materials Research Society Symposium - Proceedings |
Volume | 555 |
Publication status | Published - 1999 Jan 1 |
Externally published | Yes |
Event | Proceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998' - Boston, MA, USA Duration: 1998 Nov 30 → 1998 Dec 3 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering