Title of article
Crystal Structures and Thermoelectric Properties of Sm-Filled Skutterudite Compounds Smy Fex Co4 - x Sb12
Author/Authors
Liu Taoxiang، نويسنده , , Tang Xinfeng، نويسنده , , Xie Wenjie، نويسنده , , Yan Yonggao، نويسنده , , Zhang Qingjie، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
5
From page
739
To page
743
Abstract
Polycrystalline samples of Sm partially filled skutterudites SmyFexCo4 - xSb12 were prepared by melting and Spark Plasma Sintering technique. The results of Rietveld refinement showed that the obtained SmyFexCo4 - xSb12 samples possessed filled skutterudite structures. The thermal parameter (B) of Sm is larger than that of Sb, Fe, and Co, indicating that Sm “rattled” in Sb-icosahedron voids. The effects of filling atom Sm on thermoelectric properties of these compounds were investigated. With the increase of Sm filling fraction (y), electrical conductivity decreased, Seebeck coefficient increased and had a maximum value when y was 0.38; thermal conductivity reduced and had a minimum value when y was 0. 32. At 750 K, the highest figure of merit of 0.68 was obtained for Sm0.32Fe1.47Co2.53Sb12.
Keywords
skutterudite compound , Sm filling , rare earths , Thermoelectric properties
Journal title
Journal of Rare Earths
Serial Year
2007
Journal title
Journal of Rare Earths
Record number
1244868
Link To Document