Novel high-pressure nitrogen phase formed by compression at low temperature

Mungo Frost, Ross T. Howie, Philip Dalladay-Simpson, Alexander F. Goncharov, Eugene Gregoryanz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Raman spectroscopy and powder x-ray diffraction methods have been used to characterize a novel phase of nitrogen which forms on compression from ambient pressure at low temperatures. The new,lambda, phase exhibits an exceptionally wide range of pressure stability from below 1 to 140 GPa, overlapping nine other known phases. On heating, its transformations are different to those observed in other phases, implying that the phase nitrogen adopts depends not only on P-T path, but also on the initial structural configuration, which greatly complicates its phase diagram.

Original languageEnglish
Article number024113
Number of pages5
JournalPhysical Review B
Volume93
Issue number2
DOIs
Publication statusPublished - 29 Jan 2016
Externally publishedYes

Keywords

  • SOLID NITROGEN
  • GPA
  • SPECTROSCOPY
  • RAMAN

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