Low-Temperature thermoelectric properties of p-Type and n-Type filled skutterudite compounds Smy(Fe1-xNix)4Sb12 prepared under high pressure

Atchariya Phuangyod, Jun Ichi Hayashi, Yukihiro Kawamura, Cristina Artini, Giovanna Latronico, Riccardo Carlini, Shrikant Saini, Paolo Mele, Chihiro Sekine

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Abstract

Filled skutterudite compounds Smy(Fe1-xNix)4Sb12 (nominal composition 0 ≤ x ≤ 0.56, 0.1 ≤ y ≤ 1.2) were synthesized under high pressure using a cubic anvil press. The samples were characterized by X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray spectrometry and electron probe microanalyzer. Thermoelectric properties of Smy(Fe1-xNix)4Sb12 were investigated in the temperature range of 2-300 K. The Seebeck coefficient of samples exhibits the feature of p-Type and n-Type conductors depending on Sm-filling ratio and Fe/Ni content. The highest dimensionless figure of merit ZT value of 0.167 is achieved for nominal composition Sm0.2(Fe0.6Ni0.4)4Sb12 at room temperature.

Original languageEnglish
Article number061004
JournalJapanese Journal of Applied Physics
Volume59
Issue number6
DOIs
Publication statusPublished - 2020 Jun 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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