Synthesis of filled skutterudite compounds:: BayFexCo4-xSb12

被引：51
|
作者：
Chen, L [1 ]
Tang, X [1 ]
Goto, T [1 ]
Hirai, T [1 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF MATERIALS RESEARCH | 2000年 / 15卷 / 11期
关键词：
D O I：
10.1557/JMR.2000.0325
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ba-filled skutterudite compounds, BayFexCo4-xSb12, were synthesized by a two-step solid reaction method. A binary compound of Sb3Ba and a ternary compound of FexCo1-xSb2 were first synthesized at 900 and 973 K, respectively. The presynthesized Sb3Ba and FexCo1-xSb2 were then mixed with Sb and heated at 973 K in an Ar atmosphere. The resulting powder was of single phase with a composition of BayFexCo4-xSb12, having skutterudite structure with the Sb-dodecahedron voids fractionally filled by Ba. The lattice constant of BayFexCo4-xSb12 increased with Ba and Fe content. The maximum filling fraction of Ba (y(max)) in BayFexCo4-xSb12 was found to be greater than that of Ce or La in Ln(y)Fe(x)Co(4-x)Sb(12), especially in the lower Fe content region. The y(max) varied from 0.35 to near 1.0 when Fe content (x) changed from 0 to 4.
引用
收藏
页码：2276 / 2279
页数：4
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