Sb-NQR study of the "kondo semiconductor" CeOs4Sb 12

M. Yogi, H. Kotegawa, G. Q. Zheng, Y. Kitaoka, S. Osaki, H. Sugawara, H. Sato

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We report novel phase transition at ∼0.9 K in the Ce-based filled-skutterudite compound CeOs4Sb12 via the measurements of nuclear-spin-lattice-relaxation-rate l/T1 and 123Sb-NQR spectrum. The temperature (T) dependence of 1/T1 follows 1/T1 ∝ (T - θ)1/2 with θ = 0.06 K in the range of 1.3 K<T<25K, suggesting that the system is close to an antiferromagnetic critical point. The onset of spin-density-wave (SDW) order at TSDW ∼0.9 K is evidenced by the broadening of NQR spectrum and marked reduction in 1/T1 just below TSDW.

Original languageEnglish
Pages (from-to)e45-e46
JournalJournal of Magnetism and Magnetic Materials
Issue numberSUPPL. 1
Publication statusPublished - May 2004
Externally publishedYes


  • Filled skutterudite compounds
  • Heavy-fermion
  • Kondo insulator
  • Sb-NQR

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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