Lattice Thermal Transport in Double-filled Skutterudites In0.1YbyCo4Sb12
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2013年第4期
论文作者：徐薇 彭江英 HE Jian ZHOU Menghan YANG Junyou FU Liangwei
文章页码：677 - 681
摘 要：In order to investigate the phonon scattering mechanisms in double-filled skutterudites, the low-temperature lattice thermal conductivities of In0.1YbyCo4Sb12 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.
徐薇1，彭江英1，HE Jian2，ZHOU Menghan2，YANG Junyou3，FU Liangwei3
1. School of Mechanical Science & Engineering, Huazhong University of Science & Technology2. Department of Physics and Astronomy, Clemson University3. State Key Laboratory of Material Processing and Die & Mound Technology, Huazhong University of Science & Technology
摘 要：In order to investigate the phonon scattering mechanisms in double-filled skutterudites, the low-temperature lattice thermal conductivities of In0.1YbyCo4Sb12 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.
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