Heavy fermion compound SmOs4Sb12 in vicinity of ferromagnetic critical point

Hisashi Kotegawa, Hiroyuki Hidaka, Yoshiyuki Shimaoka, Takeshi Miki, Tatsuo C. Kobayashi, Daisuke Kikuchi, Hitoshi Sugawara, Hideyuki Sato

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


We report nuclear quadrupole resonance (NQR) measurement at ambient pressure and resistivity measurement under high pressure in the new heavy fermion (HF) compound SmOs4Sb12. The NQR spectrum and the nuclear spin-lattice relaxation rate (1/T1) clearly demonstrate the bulk nature of ferromagnetic ordering below TC ∼ 2 K. The temperature dependence of 1/T1 exhibits the characteristic behaviors of a Kondo lattice. The application of pressure decreases Kondo temperature and stabilizes the magnetic ordering, which is the same tendency as that found in some Yb-based compounds. The obtained phase diagram indicates SmOs4Sb12 to be in the vicinity of its ferromagnetic critical point.

Original languageEnglish
Pages (from-to)2173-2176
Number of pages4
Journaljournal of the physical society of japan
Issue number8
Publication statusPublished - Aug 2005


  • Filled skutterudite
  • Heavy fermion
  • Kondo effect
  • NQR
  • Pressure effect
  • QCP
  • SmOsSb

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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