High-pressure phase relationships for FeS

Satoru Urakawa, Masayuki Hasegawa, Junji Yamakawa, Ken Ichi Funakoshi, Wataru Utsumi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Phase relationships for FeS polymorph have been studied at the pressure of 16-20 GPa and temperature of 300-1350 K by in situ X-ray observation using a large volume high-pressure apparatus and a synchrotron radiation. Contrary to Fei's prediction [1], we found the stability field of NiAs-type phase of FeS extending at least to 18 GPa. Results of in situ X-ray observation correspond with the NiAs-hexagonal phase boundary determined by Kusaba et al. [2,3]. Assuming the straight NiAs-hexagonal phase boundary, we estimate that the NiAs-hexagonal-liquid triple junction is located at 39.5 GPa and 2300 K.

Original languageEnglish
Pages (from-to)491-494
Number of pages4
JournalHigh Pressure Research
Volume22
Issue number2
DOIs
Publication statusPublished - May 1 2002

Keywords

  • Core
  • Electronic transition
  • FeS
  • Iron sulfide
  • Martian core
  • Troilite

ASJC Scopus subject areas

  • Condensed Matter Physics

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