Voidites in diamond Evidence for a crystalline phase containing nitrogen
- 1 August 1986
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 54 (2) , L49-L54
- https://doi.org/10.1080/01418618608242890
Abstract
Small octahedral bubbles (′voidites′), 10–100 Å in diameter, occur in some type Ia diamonds. In a study of one such specimen, electron diffraction and moiré fringe analysis have been used to demonstrate that the bubbles contain a crystalline cubic phase. Energydispersive X-ray microanalysis on the 20 Å scale provides evidence that the phase contains nitrogen. The cell constants derived from the electron diffraction data are consistent with X-ray and compressibility data for solid ammonia, although the possibility of a hitherto unreported phase of solid N2 cannot be ruled out.Keywords
This publication has 5 references indexed in Scilit:
- Structure of NH3-III at 1.28 GPa and room temperatureActa Crystallographica Section C Crystal Structure Communications, 1984
- Fresnel fringe contrast of faceted voids within gem‐quality diamondJournal of Microscopy, 1983
- Detection of nitrogen at {100} platelets in diamondNature, 1982
- Approach to Melting in Ammonia as a Critical TransitionPhysical Review Letters, 1982
- The structure of N2 at 49 kbar and 299 KActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1981