Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9697400 | Diamond and Related Materials | 2005 | 5 Pages |
Abstract
Narrow symmetric IR absorption bands at 872.0 and 713.8 cmâ1 were observed in HPHT synthetic diamonds that had been grown in metal-carbon systems with titanium as a nitrogen getter and irradiated with 3 MeV 2Ã1017 cmâ2 electrons. As the irradiation dose was increased, the intensities of the 872.0 and 713.8 cmâ1 bands increased also. When the irradiation dose reached 6Ã1017 cmâ2 the band intensities reached 3.9 and 1.8 cmâ1, respectively. In addition, another narrow band at 847.9 cmâ1 with an intensity of 0.3 cmâ1 was noted on the shoulder of the 872.0 cmâ1 band. On subsequent annealing the band intensity in the samples reached its maximum at 200 °C then sharply decreased reaching zero at 600 °C. It is suggested that the bands could be attributed to titanium ions that entered into the lattice during diamond synthesis.
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Authors
V.G. Vins,