Pressure Induced Amorphization of Antiferromagnetic FePO4 and Fe(OH)2

G. K. Rozenberg, M. P. Pasternak, A. P. Milner, M. Amanowicz, R. D. Taylor, U. Schwarz, K. Syassen, K. E. Brister, M. Hanfland

Research output: Contribution to journalArticlepeer-review

Abstract

X-ray diffraction studies were performed in b-FeP04 and Fe(OH)2. In FePO4, at P=2.5(5) GPa, a transformation to a coexisting new crystalline and amorphous phase is observed with about equal abundance. The crystalline phase is identified as VCrO4-type where Fe111 and pv ions, are six-fold and four-fold coordinated, respectively. The pressure cycle is hysterectic. The onset of pressure-induced amorphization in Fe(OH)2 is at ~ 1 GPa however is incomplete to the highest pressure (P ~ 24 GPa). Evidence exists that anisotropic, short-range-order is involved in the amorphization process.

Original languageEnglish (US)
Pages (from-to)356-358
Number of pages3
JournalReview of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
Volume7
DOIs
StatePublished - 1998

Keywords

  • Amorphization
  • Fe(OH)
  • FePO
  • High pressure
  • X-ray diffraction

ASJC Scopus subject areas

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

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