Effect of segregated impurity phases on lattice thermal conductivity in Y-added CoSb3
Effect of segregated impurity phases on lattice thermal conductivity in Y-added CoSb3
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DOI：
10.1016/j.scriptamat.2006.10.023
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发表时间：
2007-02
影响因子：
6
通讯作者：
G. Nakamoto;Y. Yoshida;L. Vu;N. T. Huong;D. Anh;M. Kurisu
中科院分区：
文献类型：
--
作者：
G. Nakamoto;Y. Yoshida;L. Vu;N. T. Huong;D. Anh;M. Kurisu
采用淬火、烧结和退火三种制备方法合成了YxCo4Sb12（0.00≤x≤0.35）的充y角铁石化合物。Y原子不以YxCo4Sb12的形式填充角钼矿结构中的空位。加入Y后形成YSb和cosb2为杂质相。Y的加入使晶格热导率降低了30%，表明分离出的杂质相散射强烈。
Three preparation methods – quenching, sintering and annealing – have been employed to synthesize Y-filled skutterudite compounds YxCo4Sb12(0.00⩽x⩽0.35). Y atoms do not fill the vacancy sites in the skutterudite structure in the form of YxCo4Sb12. YSb and CoSb2are formed as impurity phases when Y is added. The lattice thermal conductivity is reduced by 30% by Y addition, indicating that the segregated impurity phases strongly scatter.