Synthesis, crystal structure refinement and electrical properties of uranium oxysulfide, UOS

Nobuaki Sato, Hidetoshi Masuda, Makoto Wakeshima, Kohta Yamada, Takeo Fujino

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Gas-solid reactions of UO2SO4 with H2, H2S and CS2 to form uranium (IV) oxysulfide, UOS, as a single phase were studied on the basis of thermodynamical analysis of these reactions. H2S was proved to be the best reaction agent. The reaction of UO2SO4 with CS2 resulted in the formation of UOS and US2 mixtures. A refinement of the crystal structure of UOS was made giving isotropic temperature factors and a smallest R value of 1.71%. The obtained UOS showed a p-type semi-conductivity with activation energy 67.5 meV.

Original languageEnglish
Pages (from-to)115-120
Number of pages6
JournalJournal of Alloys and Compounds
Volume265
Issue number1-2
DOIs
Publication statusPublished - 1998 Jan 30

Keywords

  • Crystal structure
  • Electrical conductivity
  • Oxysulfide
  • Sulfurization
  • Uranium

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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