Ultra rapid fabrication of p-type Li-doped Mg2Si0.4Sn0.6synthesized by unique melt spinning method

Xiaodan Tang; Guiwen Wang; Yong Zheng; Yumeng Zhang; Kunling Peng; Lijie Guo; Shuxia Wang; Min Zeng; Jiyan Dai; Guoyu Wang; Xiaoyuan Zhou

doi:10.1016/j.scriptamat.2015.12.031

Ultra rapid fabrication of p-type Li-doped Mg₂Si_0.4Sn_0.6synthesized by unique melt spinning method

Xiaodan Tang, Guiwen Wang, Yong Zheng, Yumeng Zhang, Kunling Peng, Lijie Guo, Shuxia Wang, Min Zeng, Jiyan Dai, Guoyu Wang, Xiaoyuan Zhou

Research output: Journal article publication › Journal article › Academic research › peer-review

44 Citations (Scopus)

Abstract

In this work, we successfully synthesized p-type Mg2(1-x)Li2xSi0.4Sn0.6(x = 0.00, 0.01, 0.03, 0.07, 0.09) samples using a home-made melt spinning system combined with spark plasma sintering. Compared with the samples prepared by a traditional method, the processing time is reduced from typically several days to less than one hour. It is found that the electrical conductivity rises rapidly with the increase of Li content owing to the enhanced carrier density, while the Seebeck coefficient decreases concomitantly to some extent. Meanwhile, Li doping dramatically reduces the thermal conductivity, leading to an enhanced figure of merit ZT ∼ 0.58 at 760 K.

Original language	English
Pages (from-to)	52-56
Number of pages	5
Journal	Scripta Materialia
Volume	115
DOIs	https://doi.org/10.1016/j.scriptamat.2015.12.031
Publication status	Published - 1 Apr 2016

Keywords

Melt spinning
p-type Mg (Si,Sn) 2
Thermoelectric properties

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

More information

10.1016/j.scriptamat.2015.12.031

http://hdl.handle.net/10397/100439

Cite this

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title = "Ultra rapid fabrication of p-type Li-doped Mg2Si0.4Sn0.6synthesized by unique melt spinning method",

abstract = "In this work, we successfully synthesized p-type Mg2(1-x)Li2xSi0.4Sn0.6(x = 0.00, 0.01, 0.03, 0.07, 0.09) samples using a home-made melt spinning system combined with spark plasma sintering. Compared with the samples prepared by a traditional method, the processing time is reduced from typically several days to less than one hour. It is found that the electrical conductivity rises rapidly with the increase of Li content owing to the enhanced carrier density, while the Seebeck coefficient decreases concomitantly to some extent. Meanwhile, Li doping dramatically reduces the thermal conductivity, leading to an enhanced figure of merit ZT ∼ 0.58 at 760 K.",

keywords = "Melt spinning, p-type Mg (Si,Sn) 2, Thermoelectric properties",

author = "Xiaodan Tang and Guiwen Wang and Yong Zheng and Yumeng Zhang and Kunling Peng and Lijie Guo and Shuxia Wang and Min Zeng and Jiyan Dai and Guoyu Wang and Xiaoyuan Zhou",

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T1 - Ultra rapid fabrication of p-type Li-doped Mg2Si0.4Sn0.6synthesized by unique melt spinning method

AU - Tang, Xiaodan

AU - Wang, Guiwen

AU - Zheng, Yong

AU - Zhang, Yumeng

AU - Peng, Kunling

AU - Guo, Lijie

AU - Wang, Shuxia

AU - Zeng, Min

AU - Dai, Jiyan

AU - Wang, Guoyu

AU - Zhou, Xiaoyuan

PY - 2016/4/1

Y1 - 2016/4/1

N2 - In this work, we successfully synthesized p-type Mg2(1-x)Li2xSi0.4Sn0.6(x = 0.00, 0.01, 0.03, 0.07, 0.09) samples using a home-made melt spinning system combined with spark plasma sintering. Compared with the samples prepared by a traditional method, the processing time is reduced from typically several days to less than one hour. It is found that the electrical conductivity rises rapidly with the increase of Li content owing to the enhanced carrier density, while the Seebeck coefficient decreases concomitantly to some extent. Meanwhile, Li doping dramatically reduces the thermal conductivity, leading to an enhanced figure of merit ZT ∼ 0.58 at 760 K.

AB - In this work, we successfully synthesized p-type Mg2(1-x)Li2xSi0.4Sn0.6(x = 0.00, 0.01, 0.03, 0.07, 0.09) samples using a home-made melt spinning system combined with spark plasma sintering. Compared with the samples prepared by a traditional method, the processing time is reduced from typically several days to less than one hour. It is found that the electrical conductivity rises rapidly with the increase of Li content owing to the enhanced carrier density, while the Seebeck coefficient decreases concomitantly to some extent. Meanwhile, Li doping dramatically reduces the thermal conductivity, leading to an enhanced figure of merit ZT ∼ 0.58 at 760 K.

KW - Melt spinning

KW - p-type Mg (Si,Sn) 2

KW - Thermoelectric properties

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JO - Scripta Materialia

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