Thermoelectric and magnetic properties of Yb2MgSi2 prepared by spark plasma sintering method

M. Kubouchi, K. Hayashi, Y. Miyazaki

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1 Citation (Scopus)

Abstract

An intermediate-valence compound, Yb2MgSi2, has been prepared using a spark plasma sintering method. The magnetic susceptibility and thermoelectric properties of Yb2MgSi2 are measured in the temperature range from 5 to 300 K. From the magnetic susceptibility results, Yb valence of the Yb2MgSi2 is evaluated. As compared with YbAl3, which is one of the promising thermoelectric materials that can be used at low temperatures, Yb2MgSi2 exhibits a lower absolute value of Seebeck coefficient, higher electrical resistivity, and lower thermal conductivity over the measured temperature range. A maximum dimensionless figure of merit, ZT, of 0.0018 is achieved at around 200 K.

Original languageEnglish
Article number769
JournalApplied Physics A: Materials Science and Processing
Volume122
Issue number8
DOIs
Publication statusPublished - 2016 Aug 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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