Effect of Ce filling fraction on thermoelectric transport properties of p-type CeyFe1.5Co2.5Sb12

Xin Feng Tang, Li Dong Chen, Takashi Goto, Toshio Hirai, Run Zhang Yuan

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Effect of Ce filling fraction on the thermoelectric transport properties of p-type Co-rich filled skutteudite compounds: CeyFe1.5Co2.5Sb12(.y = 0-0.46) were investigated. CeyFe1.5Co2.5Sb12 showed p-type conduction. Hall coefficient RH increased with increasing Ce filling fraction. Hole concentration p and electrical conductivity δ decreased with increasing Ce filling fraction. Seebeck coefficient a increased with increasing Ce filling fraction, when Ce filling fraction was about 0.3, the lattice thermal conductivity κ1 reached the minimum value. It indicated that the effect of Ce rattling on phonon scattering was the strongest as Sb-dodecahedron partial voids were filled by Ce. A maximum ZT value of 1.1 was obtained for Co-rich Ce0.28Fe1.52Co2.48Sb12 at 750 K.

Original languageEnglish
Pages (from-to)2464-2465
Number of pages2
JournalWuli Xuebao/Acta Physica Sinica
Volume49
Issue number12
Publication statusPublished - 2000 Dec 1

Keywords

  • Carrier concentration
  • Electrical conductivity
  • Filling fraction
  • Lattice thermal conductivity
  • Seebeck coefficient

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Tang, X. F., Chen, L. D., Goto, T., Hirai, T., & Yuan, R. Z. (2000). Effect of Ce filling fraction on thermoelectric transport properties of p-type CeyFe1.5Co2.5Sb12. Wuli Xuebao/Acta Physica Sinica, 49(12), 2464-2465.