Heavy fermion compound SmOs4Sb12 in vicinity of ferromagnetic critical point

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

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

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
Volume74
Issue number8
DOIs
Publication statusPublished - Aug 2005

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nuclear quadrupole resonance
critical point
fermions
pressure measurement
spin-lattice relaxation
nuclear spin
tendencies
phase diagrams
temperature dependence
electrical resistivity
temperature

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Heavy fermion compound SmOs4Sb12 in vicinity of ferromagnetic critical point. / Kotegawa, Hisashi; Hidaka, Hiroyuki; Shimaoka, Yoshiyuki; Miki, Takeshi; Kobayashi, Tatsuo; Kikuchi, Daisuke; Sugawara, Hitoshi; Sato, Hideyuki.

In: Journal of the Physical Society of Japan, Vol. 74, No. 8, 08.2005, p. 2173-2176.

Research output: Contribution to journalArticle

Kotegawa, H, Hidaka, H, Shimaoka, Y, Miki, T, Kobayashi, T, Kikuchi, D, Sugawara, H & Sato, H 2005, 'Heavy fermion compound SmOs4Sb12 in vicinity of ferromagnetic critical point', Journal of the Physical Society of Japan, vol. 74, no. 8, pp. 2173-2176. https://doi.org/10.1143/JPSJ.74.2173
Kotegawa, Hisashi ; Hidaka, Hiroyuki ; Shimaoka, Yoshiyuki ; Miki, Takeshi ; Kobayashi, Tatsuo ; Kikuchi, Daisuke ; Sugawara, Hitoshi ; Sato, Hideyuki. / Heavy fermion compound SmOs4Sb12 in vicinity of ferromagnetic critical point. In: Journal of the Physical Society of Japan. 2005 ; Vol. 74, No. 8. pp. 2173-2176.
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