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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

34 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 languageEnglish
Pages (from-to)52-56
Number of pages5
JournalScripta Materialia
Volume115
DOIs
Publication statusPublished - 1 Apr 2016

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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