The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Synthesis and Electrical Properties of Barium Uranium Sulfides

  • Sato, Nobuaki (Institute for Advanced Materials Processing Tohoku University) ;
  • Nakajima, Takeshi (Opto-Technology Laboratory, The Furukawa Electric Co., Ltd) ;
  • Yamada, Kohta (Institute for Advanced Materials Processing Tohoku University) ;
  • Fujino, Takeo (Institute for Advanced Materials Processing Tohoku University)
  • Published : 1999.12.01
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Abstract

Barium uranium sulfides, $BaUS_3$ and $BaU_2B_5$, were synthesized in a single phase by the reactin of $(Ba, UO_2)(NO_3)_2$ at Ba/U=1 and 0.5 with carbon disulfide at 1273 K for 6 h. They crystallized in orthorhombic structure with space group, Pnma. The lattice parameters a, b and c are 7.493, 10.38 and 7.238$\AA$ for $BaUS_3$ and 7.525, 8.475 and 11.858$\AA$ for $BaU_2S_5$, respectively. The electrical conductivity of these compunds increased with increasing temperature above 200K, below which however, it was nearly temperature independent. The Hall coefficient suggested that they are n-type semiconductors.

Keywords

References

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