Specific Heat Study on Sm-based Filled Skutterudite Phosphides Sm<i>T</i>₄P₁₂ (<i>T</i>=Fe, Ru and Os)

• Matsuhira Kazuyuki

  Faculty of Engineering, Kyushu Institute of Technology

• Doi Yoshihiro

  Division of Chemistry, Graduate School of Science, Hokkaido University

• Wakeshima Makoto

  Division of Chemistry, Graduate School of Science, Hokkaido University

• Hinatsu Yukio

  Division of Chemistry, Graduate School of Science, Hokkaido University

• Amitsuka Hiroshi

  Division of Physics, Graduate School of Science, Hokkaido University

• Shimaya Yousuke

  Department of Electrical and Electronic Engineering, Muroran Institute of Technology

• Giri Ram

  Department of Electrical and Electronic Engineering, Muroran Institute of Technology

• Sekine Chihiro

  Department of Electrical and Electronic Engineering, Muroran Institute of Technology

• Shirotani Ichimin

  Department of Electrical and Electronic Engineering, Muroran Institute of Technology

書誌事項

タイトル別名

• Specific Heat Study on Sm-based Filled Skutterudite Phosphides SmT4P12 (T=Fe, Ru and Os)

抄録

Sm-based filled skutterudite phosphides SmFe₄P₁₂, SmRu₄P₁₂ and SmOs₄P₁₂ synthesized at high temperatures and high pressures have been studied by specific heat measurements in magnetic fields. SmFe₄P₁₂ shows an anomaly at 1.6 K attributed to a ferromagnetic transition. SmRu₄P₁₂ shows a metal–insulator transition at 16 K. This transition consists of two successive transitions, which suggests orbital and antiferromagnetic orderings. SmOs₄P₁₂ shows a sharp anomaly at 4.5 K due to an antiferromagnetic ordering. We discuss the characteristic behavior of those phase transitions and the crystalline electric field state in SmT₄P₁₂ (T=Fe, Ru and Os). Interestingly, the magnetic entropy of SmFe₄P₁₂ have only 0.16Rln2 below the ferromagnetic ordering temperature. This suggests a strong spin fluctuation effect. On the other hand, the variation of magnetic entropy in SmRu₄P₁₂ and SmOs₄P₁₂ reaches to nearly Rln4 below the ordering temperature.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 74 (3), 1030-1035, 2005

  一般社団法人 日本物理学会

キーワード

• filled skutterudite
• SmFe<SUB>4</SUB>P<SUB>12</SUB>
• SmRu<SUB>4</SUB>P<SUB>12</SUB>
• SmOs<SUB>4</SUB>P<SUB>12</SUB>
• specific heat
• crystalline electric field

詳細情報

• CRID: 1390282679162682112
• NII論文ID: 210000105357
• NII論文ID: 110001979485
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.74.1030
• BIBCODE: 2005JPSJ...74.1030M
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 7282771
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7282771
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.74.1030
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
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