Preparation and thermoelectric properties of polycrystalline nonstoichiometric Yb14MnSb11 Zintl compounds
Preparation and thermoelectric properties of polycrystalline nonstoichiometric Yb14MnSb11 Zintl compounds
复制标题
多晶非化学计量Yb14MnSb11 Zintl化合物的制备及其热电性能
DOI:
10.1002/pssr.201004193
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发表时间:
2010-09
期刊:
影响因子:
--
通讯作者:
Zhao, X. B.
中科院分区:
文献类型:
--
作者:
Yu, C.;Zhu, T. J.;Yang, S. H.;Shen, J. J.;Zhao, X. B.
Polycrystalline nonstoichiometric Yb14MnSb11 compounds have been successfully prepared by modified induction melting and spark plasma sintering. The carrier concentration was finely tuned by changing the elemental ratio of Mn to Sb. Excess Mn decreases the electrical conductivity and increases the Seebeck coefficient. The thermal conductivity of all samples was less than 1.0 W m–1 K–1. The maximum ZT value is 0.35 K at 673 K for Yb14Mn1.05Sb11, significantly higher than that of the stoichiometric Yb14MnSb11 polycrystalline sample. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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