Synthesis and Thermoelectric Properties of SnzCo3.7Ni0.3Sb12 Skutterudites

被引：2

作者：

Jung, Jae-Yong ^{[1
]}

Park, Kwan-Ho ^{[1
]}

Kim, Il-Ho ^{[1
]}

机构：

[1] Chungju Natl Univ, Dept Mat Sci & Engn, Chungju 380702, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2011年 / 58卷 / 05期

关键词：

Thermoelectric; Transport property; Skutterudite; TRANSPORT-PROPERTIES; DOPED COSB3;

D O I：

10.3938/jkps.58.1421

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

SnzCo3.7Ni0.3Sb12 skutterudites were synthesized by induction melting followed by annealing at 823 K for 120 h in a vacuum. The effects of Sn filling on the transport and the thermoelectric properties were examined at temperatures from 300 K to 700 K. The Seebeck coefficient and Hall coefficient revealed a change in electrical conduction type from n-type to p-type when the filling fraction (z) was higher, than 0.4. The temperature dependence of the electrical resistivity suggests that SnzCo3.7Ni0.3Sb12 is a highly degenerate semiconducting material. The electrical resistivity increased with increasing Sn content, which is related to the bipolar thermoelectric effect. The thermal conductivity was reduced by Sn filling, with Sn0.2Co3.7Ni0.3Sb12 showing the lowest value.

引用

页码：1421 / 1425

页数：5

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