Effect of samarium filling on the lattice thermal conductivity of skutterudite materials
来源期刊：Journal of Rare Earths2012年第4期
论文作者：姜一平 贾晓鹏 邓乐 马红安
文章页码：388 - 391
摘 要：Sm-filled skutterudites SmxCo4Sb12 （x=0.1, 0.2, 0.5） were synthesized via high pressure and high temperature （HPHT） technique. The temperature dependences of electrical resistivity, Seebeck coefficient and thermal conductivity were measured on these compounds in the range of 300-723 K. All samples showed n-type conduction. The thermal conductivity of SmxCo4Sb12 was significantly depressed as com-pared to unfilled CoSb3. It was believed that Sm atoms "rattled" in the voids of structure and substantially affected the phonon propagation through the lattice. The dimensionless thermoelectric figure of merit, ZT, increased with increasing temperature and reached a maximum value of 0.81 for Sm0.5Co4Sb12 at 723 K.
姜一平1，贾晓鹏2，邓乐2，马红安2
1. Department of Physics, Beihua University2. National Lab of Superhard Materials, Jinlin University
摘 要：Sm-filled skutterudites SmxCo4Sb12 （x=0.1, 0.2, 0.5） were synthesized via high pressure and high temperature （HPHT） technique. The temperature dependences of electrical resistivity, Seebeck coefficient and thermal conductivity were measured on these compounds in the range of 300-723 K. All samples showed n-type conduction. The thermal conductivity of SmxCo4Sb12 was significantly depressed as com-pared to unfilled CoSb3. It was believed that Sm atoms "rattled" in the voids of structure and substantially affected the phonon propagation through the lattice. The dimensionless thermoelectric figure of merit, ZT, increased with increasing temperature and reached a maximum value of 0.81 for Sm0.5Co4Sb12 at 723 K.
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