An anomaly in the infrared absorption spectrum of synthetic diamond
- 1 July 1982
- journal article
- other
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 46 (1) , 77-83
- https://doi.org/10.1080/13642818208246424
Abstract
Careful measurements of infrared spectra of synthetic diamonds bring to light two apparently contradictory observations. On the one hand, it is shown that there is an excellent correlation between the strengths of the nitrogen-induced absorption at 1130 cm−1 and of the local-mode absorption peak at 1344 cm−1. On the other hand, our results confirm another earlier report that, whilst the 1130 cm−1 band is shifted towards lower wavenumbers by the incorporation of 15N into the crystals, the 1344 cm−1 peak is unaffected. This suggests that nitrogen atoms do not participate in the 1344 cm−1 vibration. It is difficult to understand the second observation in the light of the first. A small peak at ∼ 2688 cm−1 in the absorption of one of the specimens studied is thought to be the first overtone of the 1344 cm−1 vibration.Keywords
This publication has 10 references indexed in Scilit:
- Polarized infra-red cathodoluminescence from synthetic diamondsPhilosophical Magazine Part B, 1980
- Vacancy enhanced aggregation of nitrogen in diamondJournal of Physics C: Solid State Physics, 1980
- Transformation of the state of nitrogen in diamondNature, 1977
- Cathodoluminescence, optical absorption and x-ray topographic studies of synthetic diamondsJournal of Crystal Growth, 1975
- High resolution infra-red spectra of diamondSolid State Communications, 1971
- Dispersed paramagnetic nitrogen content of large laboratory diamondsPhilosophical Magazine, 1971
- Infra-red Spectra of Diamond CoatNature, 1967
- Optical absorption features associated with paramagnetic nitrogen in diamondPhilosophical Magazine, 1965
- Diamonds Containing Controllable Impurity ConcentrationsNature, 1962
- Infrared Spectra of Synthetic DiamondThe Journal of Chemical Physics, 1961