Thermoelectric performance of multiphase XNiSn (X = Ti, Zr, Hf) half-Heusler alloys
Thermoelectric performance of multiphase XNiSn (X = Ti, Zr, Hf) half-Heusler alloys
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DOI：
10.1039/c3ta13955g
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发表时间：
2014-01-01
影响因子：
11.9
通讯作者：
Bos, J. -W. G.
中科院分区：
文献类型：
--
作者：
Downie, R. A.;MacLaren, D. A.;Bos, J. -W. G.
定量的X射线粉末衍射分析表明，在这类重要的热电材料中，钛、锆和Hf掺杂在半赫斯勒结构中的离子位上，是降低晶格热导率的常用策略，导致了多相行为。例如，标称Ti0.5Zr0.5NiSnTi1-xZrxNiSn组分的分布在0.24之间
Quantitative X-ray powder diffraction analysis demonstrates that mixing Ti, Zr and Hf on the ionic site in the half-Heusler structure, which is a common strategy to lower the lattice thermal conductivity in this important class of thermoelectric materials, leads to multiphase behaviour. For example, nominal Ti0.5Zr0.5NiSn has a distribution of Ti1-xZrxNiSn compositions between 0.24