Thermoelectric properties of Eu(Zn1−xCdx)2Sb2

Hui Zhang; Michael Baitinger; Mei-Bo Tang; Zhen-Yong Man; Hao-Hong Chen; Xin-Xin Yang; Yi Liu; Ling Chen; Yuri Grin; Jing-Tai Zhao

doi:10.1039/B916346H

Thermoelectric properties of Eu(Zn_1−xCd_x)₂Sb₂

Hui Zhang,^ab Michael Baitinger,^b Mei-Bo Tang,^a Zhen-Yong Man,^a Hao-Hong Chen,^a Xin-Xin Yang,^a Yi Liu,^c Ling Chen,^c Yuri Grin*^b and Jing-Tai Zhao*^a

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* Corresponding authors

^a Key Laboratory of Transparent Opto-Functional Inorganic Materials of Chinese Academy of Sciences (Shanghai Institute of Ceramics), Shanghai, China
E-mail: jtzhao@mail.sic.ac.cn

^b Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, Dresden, Germany
E-mail: grin@cpfs.mpg.de

^c Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou Gulou Yangqiaoxilu 155, Fujian, China

Abstract

The thermoelectric performance of EuZn₂Sb₂ and EuCd₂Sb₂ was optimized by mixed occupation of the transition metal position. Samples in the solid solution Eu(Zn_1−xCd_x)₂Sb₂ with the CaAl₂Si₂-type crystal structure (space group [P with combining macron] m1) were prepared from the elements for compositions with x = 0, 0.1, 0.3, 0.5 and 1. The thermoelectric properties were investigated after densification of the products by spark plasma sintering (SPS). The samples show low electrical resistivity, high thermopower and a low lattice thermoconductivity. The highest ZT value of 1.06 at 650 K is obtained for x = 0.1.

This article is part of the themed collection: Thermoelectric materials

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Thermoelectric properties of Eu(Zn_1−xCd_x)₂Sb₂

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Thermoelectric properties of Eu(Zn_1−xCd_x)₂Sb₂

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