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Thermoelectric properties of Zn-Sn-Sb based alloys

Published online by Cambridge University Press:  22 March 2011

Motoki Ito ,
Yuji Ohishi ,
Hiroaki Muta ,
Ken Kurosaki  and
Shinsuke Yamanaka
Motoki Ito
Affiliation:
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Yuji Ohishi
Affiliation:
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Hiroaki Muta
Affiliation:
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Ken Kurosaki
Affiliation:
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Shinsuke Yamanaka
Affiliation:
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan Research Institute of Nuclear Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan.
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Abstract

In the Zn-Sn-Sb ternary system, Zn4Sb3, ZnSnSb2, and ZnSb have attracted attentions as advanced thermoelectric materials. Zn-Sn-Sb based alloys with various compositions were fabricated and the thermoelectric properties were investigated. That system is composed by orthorhombic ZnSb phase, tetragonal ZnSnSb2 phase with chalcopyrite structure, and rhombohedral SnSb phase. Large Sn content increases volume fraction of the metallic SnSb phase, which degenerate the powar factor. The ZnSb based alloy shows relatively large Seebeck coefficient. Sn substitution for ZnMxSb1-x significantly enhances the power factor, which indicates that Sn is effective dopant for ZnSb.

Keywords

thermoelectricalloychemical composition
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1314: Symposium LL – Thermoelectric Materials for Solid-State Power Generation and Refrigeration , 2011 , mrsf10-1314-ll08-24
Copyright
Copyright © Materials Research Society 2011

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References

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