Structures of FeS Polymorphs at High Pressure and Temperature

Y. Fei, C. T. Prewitt, D. J. Frost, J. B. Pariset, K. Brister

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Powder x-ray diffraction data for FeS polymorphs were collected at high pressure and temperature, using monochromatic synchrotron x-radiation and image plate. The diffraction data collected at 10.95 GPa and 300 K revealed a monoclinic high-pressure phase (FeS III) with cell parameters, a = 8.025(4) Å, b = 5.614(2) Å, C = 6.414(4) Å, and β = 93.01(4)°. The space group of this monoclinic phase is P21la. We also collected diffraction data for the high PT phase (FeS IV) at 5.2 GPa and 9.0 GPa and at 530 K and for the high-T phase (FeS V) at 3.4 GPa and 650 K. The FeS IV phase has a hexagonal (2a, c) unit cell (space group P63mc) and the FeS V phase has a simple NiAs-type structure (space group P63/mmc). The structure parameters were determined by Rietveld refinements.

Original languageEnglish (US)
Pages (from-to)55-58
Number of pages4
JournalReview of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
Volume7
DOIs
StatePublished - Jan 1 1998

Keywords

  • Crystallography
  • High-pressure physics
  • Phase transition
  • Synchrotron x-ray diffraction
  • crystal chemistry

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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