Effects of filling atoms Ba, Ce, Y and substituting atoms Fe, Ni on lattice thermal conductivity of RyMxCo4 - XSb 12

X. F. Tang, L. D. Chen, J. Wang, Q. J. Zhang, T. Goto, T. Hirai

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Effects of filling atoms with different ionic radiuses Ba, Ce, Y and different substituting atoms Fe, Ni on the lattice thermal conductivity of filled RyMxCo4 - xSb12 are systematically studied. The results show that the lattice thermal conductivity decreases significantly by filling Ba, Ce, Y atoms in Sb-icosahedron voids, and the reducing range of the lattice thermal conductivity increases with the ionic radii of Ba2+, Ce3+ and Y3+ decreasing. The lowest lattice thermal conductivity and strongest rattling actions of filling atoms on scattering of phonons are obtained when the Sb-icosahedron voids are partly filled. The lattice thermal conductivity of RyM xCo4 - xSb12 decreases greatly by substituting Co with Fe or Ni, and the substituting atoms Ni are more effective than Fe in reducing lattice thermal conductivity.

本文言語English
ページ(範囲)259-264
ページ数6
ジャーナルJournal of Alloys and Compounds
394
1-2
DOI
出版ステータスPublished - 2005 5月 17

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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