Improved phase diagram of nitrogen up to 85 kbar
- 15 November 1989
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 91 (10) , 6302-6305
- https://doi.org/10.1063/1.457397
Abstract
A quasi‐isochoric scanning method has been used to study the phase diagram of nitrogen from 150 to 550 K and up to 85 kbar in a diamond anvil cell in order to make a comparison with previous measurements of the binary phase diagram He–N2. It has been confirmed that there is only one solid‐solid‐fluid triple point in N2 up to 85 kbar. However, both the δ–β transition line and the melting line have shifted appreciably towards lower pressures. The present experiment shows that, as a result of this, the triple point is located at 555±5 K and 80±2 kbar, which is 20% lower in pressure than previous data.Keywords
This publication has 24 references indexed in Scilit:
- The phase behaviour of the system He-N2 related to the phase diagram of pure N2Chemical Physics Letters, 1988
- Raman spectroscopy and melting of nitrogen between 290 and 900 K and 2.3 and 18 GPaThe Journal of Chemical Physics, 1987
- Optical Studies of Nitrogen to 130 GPaPhysical Review Letters, 1985
- Phase transitions in nitrogen observed by Raman spectroscopy from 0.4 to 27.4 GPa at 15 KThe Journal of Physical Chemistry, 1985
- Phase diagram of nitrogen determined by Raman spectroscopy from 15 to 300 K at pressures to 52 GPaThe Journal of Physical Chemistry, 1984
- The structure of N2 at 49 kbar and 299 KActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1981
- Solidification of helium, at room temperature under high pressureJournal de Physique Lettres, 1979
- Melting parameters of methane and nitrogen from 0 to 10 kbarPhysical Review B, 1975
- Electron diffraction and the structure of α-N2Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1974
- Crystal Structure of Gamma NitrogenPhysical Review Letters, 1969