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Lattice thermal transport in BaxREyCo4Sb12 (RE=Ce, Yb, and Eu) double-filled skutterudites

被引：35
作者：
Bai, S. Q. [1 ,2 ]
Shi, X. [1 ]
Chen, L. D. [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 20期
关键词：
THERMOELECTRIC PROPERTIES; HIGH FIGURE; ANTIMONIDES; COSB3; MERIT;
D O I：
10.1063/1.3429606
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We use the Debye model to investigate the phonon scattering mechanisms in BaxREyCo4Sb12 double-filled skutterudites. Filling two types of guest atoms (barium and rare-earth elements) into the voids of skutterudite introduces additional phonon point defect scattering from the extra mass fluctuation at the void site, and additional phonon resonant scattering by the fillers with different vibrational frequencies, leading to significant reduction in the lattice thermal conductivity. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3429606]
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页数：3
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