The effects of filling atoms with different ionic radii of Ba, Ce, Y and different substituting atoms Fe, Ni on the lattice thermal conductivity of filled RyMxCo4-xSb12 are investigated. The results show that the lattice thermal conductivity decreases significantly when Ba, Ce, Y atoms filled in Sb-icosahedron voids, and the reducing range of the lattice thermal conductivity increases in the order of decreasing ionic radius of Ba, Ce and Y. The lowest lattice thermal conductivity and strongest rattling actions of filling atoms to the scattering of phonons are gained when the Sb-icosahedron voids are partly filled. The lattice thermal conductivity of RyMxCo4-xSb12 decreases greatly by substituting Fe or Ni for Co, and the substituting atoms Ni are more effective than Fe.
|Number of pages||6|
|Journal||Wuli Xuebao/Acta Physica Sinica|
|Publication status||Published - 2004 May|
- Lattice thermal conductivity
ASJC Scopus subject areas
- Physics and Astronomy(all)