Publication
Title
Formation of amorphous carbon and graphite in CVD diamond upon annealing: A HREM, EELS, Raman and optical study
Author
Abstract
Polycrystalline diamond thick films were subjected to annealing in vacuum at temperatures of 1350-1450 degreesC. The films were examined by optical absorption, Raman spectroscopy, transmission electron microscopy and electron energy loss spectroscopy. The formation of amorphous carbon and/or of well-crystallized graphite layers up to 20 nm thick was evidenced along grain boundaries. Intra-granular nanometer-sized graphite islands were also observed, sometimes as transformed micro-twin bands. The diamond-to-graphite transition occurs in such a way that three (111) diamond planes transform into two (0002) graphitic sheets. The internal graphitization causes a severe degradation of the optical quality of the diamond films.
Language
English
Source (journal)
Physica status solidi: A: applied research. - Berlin
Source (book)
6th International Workshop on Surface and Bulk Defects in CVD Diamond, MAR 01-02, 2001, DIEPENBEEK HASSELT, BELGIUM
Publication
Berlin : Wiley-v c h verlag gmbh, 2001
ISSN
0031-8965
Volume/pages
186:2(2001), p. 207-214
ISI
000170435000006
Full text (Publisher's DOI)
UAntwerpen
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 12.07.2012
Last edited 21.09.2017