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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:26 |
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Conference: Bucharest University Faculty of Physics 2001 Meeting
Section: Polymer Physics
Title:
SYNTHETIC DIAMOND AND SYNTHESIS PRODUCTS ANALYZED USING RAMAN SPECTROSCOPY
Authors:
F. Dumitrache*, I. Sandu*, I. Soare*, I. Mojan*, I. Voicu and
I. Stamatin**, A. Dumitru**
Affiliation:
*National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG-36, R-76 900, Bucharest, ROMANIA
**University of Bucharest, Faculty of Physics , Bucharest, Romania
E-mail
Keywords:
Abstract:
Diamond growth at HP-HT, in systems Metal- Catalyst, is one of the most used methods. Usually the synthesis conditions are: 1500-1600 K, 5-6 Gpa. Unfortunately is less known about synthesis mechanisms and a correlation between reaction products and diamond morphology is still a disputable question. Raman spectroscopy became the most important technique used in carbonic structure characterization because it reveals sharp differences between them. Raman technique is able to separate carbonic material types where XRD method isn’t sensitive. The properties of Diamond grits, as super abrasive material, are strongly dependent by level of metal catalyst and graphite inclusions and Raman spectroscopy can be a powerful tool for this kind of investigation. The aims of paper deal with a comparative study, by Raman spectroscopy, using samples of synthetic diamond with different origin. Also a comparison between samples after synthesis (graphite, metal catalyst) and nature of inclusions in diamond crystals is taken in account.
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