Lattice Thermal Transport in Double- filled Skutterudites In0.1YbyCo4Sb12

In order to investigate the phonon scattering mechanisms in double-filled skutterudites, the low-temperature lattice thermal conductivities of Ino.lYbyCO4Sb12 were measured and analyzed based on the Debye model. The eingenmode frequencies of In and Yb were obtained from low-temperature specific heat...

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Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2013, Vol.28 (4), p.677-681
Main Authors: Xu, Wei, Peng, Jiangying, He, Jian, Zhou, Menghan, Yang, Junyou, Fu, Liangwei
Format: Article
Language:English
Subjects:
Advanced Materials
Chemistry and Materials Science
Materials Science
共振散射
填充
德拜模型
散射机制
方钴矿
晶格热导率
比热容
运输
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Summary:In order to investigate the phonon scattering mechanisms in double-filled skutterudites, the low-temperature lattice thermal conductivities of Ino.lYbyCO4Sb12 were measured and analyzed based on the Debye model. The eingenmode frequencies of In and Yb were obtained from low-temperature specific heat capacity analysis. It is found that filling these two types of guest atoms with different eingenmode frequencies into the voids in skutterudites could introduce strong point defect and resonant scattering to lattice phonons, thus lead to significant decrease in the lattice thermal conductivity.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-013-0751-0