Sb NQR Study of Ferromagnetic Instability in Alkaline-Earth-Filled Skutterudites SrFe4Sb12 and BaFe4Sb12

• Matsumura Masahiro

  Department of Material Science, Faculty of Science, Kochi University

• Hyoudou Genki

  Department of Material Science, Faculty of Science, Kochi University

• Kato Harukazu

  Department of Material Science, Faculty of Science, Kochi University

• Nishioka Takashi

  Department of Material Science, Faculty of Science, Kochi University

• Matsuoka Eiichi

  Department of Quantum Matter, ADSM, Hiroshima University

• Tou Hideki

  Department of Quantum Matter, ADSM, Hiroshima University

• Takabatake Toshirou

  Department of Quantum Matter, ADSM, Hiroshima University

• Sera Masafumi

  Department of Quantum Matter, ADSM, Hiroshima University

Bibliographic Information

Other Title

• Sb NQR Study of Ferromagnetic Instability in Alkaline-Earth-Filled Skutterudites SrFe₄Sb₁₂and BaFe₄Sb₁₂

Abstract

We report a ^121,123Sb nuclear quadrupole resonance (NQR) study of SrFe₄Sb₁₂ and BaFe₄Sb₁₂. The absence of hyperfine splitting or marked broadening in NQR spectra even at the lowest temperature (1.5 K) suggests the absence of uniform ferromagnetic ordering in both compounds. The nuclear spin-lattice relaxation rate divided by temperature, 1⁄T₁T, does not follow the Korringa law, but shows a broad maximum at around 60 K. At temperatures higher than 80 K, 1⁄T₁T can be decomposed into two terms, (1⁄T₁T)₀=const. and T-dependent (1⁄T₁T)_spin. The component (1⁄T₁T)_spin is proportional to χ_spin, which suggests that the present system is close to ferromagnetic instability, whereas below 60 K, (1⁄T₁T)_spin decreases to zero, being unexpected in typical nearly or weakly ferromagnetism.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 74 (8), 2205-2208, 2005

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• skutterudite
• SrFe<SUB>4</SUB>Sb<SUB>12</SUB>
• BaFe<SUB>4</SUB>Sb<SUB>12</SUB>
• Sb-NQR
• ferromagnetic instability

Details

• CRID: 1390282679164701440
• NII Article ID: 110001979692
• NII Article ID: 210000105581
• NII Article ID: 130004539365
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.74.2205
• BIBCODE: 2005JPSJ...74.2205M
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 7394757
• Web Site: http://id.ndl.go.jp/bib/7394757
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7394757
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.74.2205
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed