Nanosized La filled CoSb3 prepared by a solvothermal-annealing method
Nanosized La filled CoSb3 prepared by a solvothermal-annealing method
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DOI：
10.1016/j.matlet.2007.11.088
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发表时间：
2008-05
影响因子：
3
通讯作者：
J. Mi;X. Zhao;T. Zhu;J. Tu
中科院分区：
文献类型：
--
作者：
J. Mi;X. Zhao;T. Zhu;J. Tu
纳米结构是降低材料导热系数的有效途径之一。采用溶剂热退火法成功地合成了纳米La填充CoSb3。结果表明，La原子在退火过程中填充到晶格笼子中。热处理后的粉末平均尺寸约为20 nm，略大于溶剂热法制备的粉末。采用热压法制备了块状样品。进行了电学性能测试，在520K下获得的最高功率因数约为0.43×10−3Wm−1K−2。
Nanostructuring is one of the effective approaches to lower the thermal conductivity of materials. Nanosized La filled CoSb3was successfully synthesized by a solvothermal-annealing method. It shows that the La atoms were filled into the lattice cages during the annealing process. The average size of the powders after annealing process is about 20 nm, a little larger than the solvothermally prepared powders. The bulk sample was prepared by hot pressing. Electrical properties measurements were performed and the highest power factor is about 0.43×10−3Wm−1K−2obtained at 520 K.