TY - JOUR
T1 - Effects of filling atoms Ba, Ce, Y and substituting atoms Fe, Ni on lattice thermal conductivity of RyMxCo4 - XSb 12
AU - Tang, X. F.
AU - Chen, L. D.
AU - Wang, J.
AU - Zhang, Q. J.
AU - Goto, T.
AU - Hirai, T.
N1 - Funding Information:
This work was partially sponsored by National Natural Science Foundation of China (no. 50372049), and by the National High Technology Development Program of China. It was also partially supported by a Grant-in-aid for Encouragement of Young Scientists (A) (no. 12750591) of Japan.
PY - 2005/5/17
Y1 - 2005/5/17
N2 - 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.
AB - 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.
KW - Filled skutterudites
KW - Filling fraction
KW - Lattice thermal conductivity
KW - Substituting content
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U2 - 10.1016/j.jallcom.2004.08.105
DO - 10.1016/j.jallcom.2004.08.105
M3 - Article
AN - SCOPUS:17644393523
VL - 394
SP - 259
EP - 264
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
IS - 1-2
ER -