Phase diagram of nitrogen: in-situ Raman spectroscopy investigation
(English)Manuscript (Other academic)
In this paper we confirm the existence of previously reported θ molecular phase of nitrogen and present in-situ Raman spectra of different molecular phases of nitrogen at temperatures over 900 K at 100 GPa pressure. Our investigation indicate very high transition barrier between ε and θ phases, θ being accessible only from previously quenched samples. Our experimental results indicate a “steeper" slope of δ/ε phase boundary than the extrapolation of previously determined phase line.
Condensed Matter Physics
Research subject Materials Science
IdentifiersURN: urn:nbn:se:su:diva-27410OAI: oai:DiVA.org:su-27410DiVA: diva2:214095