Synthesis and superconducting properties of bulk CaC6 GIC

• Hérold Claire

  Corresponding Author

• Emery Nicolas

  Corresponding Author

• Marêché Jean-Francois

  Corresponding Author

• Lagrange Philippe

  Corresponding Author

書誌事項

タイトル別名

• Synthesis and superconducting properties of bulk CaC<SUB>6</SUB> GIC

抄録

Among graphite intercalation compounds, the CaC₆ binary phase exhibits superconducting properties with the highest critical temperature of 11.5 K. The samples are synthesised using a liquid-solid method allowing the preparation of pure bulk samples, auspicious for crystallographic and magnetic measurements. Thecrystal structure of CaC₆ was entirely specified, this compound crystallises in the Om space group.The magnetic properties of this phase were studied with a magnetic field successively applied parallel and perpendicular to the graphene sheets. The magnetic phase diagram indicates that the CaC6 binary compound is a type II superconducting material slightly anisotropic in spite of its lamellar structure. The in-plane magnetic penetration depth measurements show a clear exponential behaviour at low temperature, consistent with an s-wave symmetry of the gap function, well fitted by the standard BCS theory in the dirty limit.

収録刊行物

• 炭素

  炭素 2008 (233), 166-173, 2008

  炭素材料学会

キーワード

• Graphite intercalation compound
• Synthesis
• X-ray diffraction
• Superconductivity

詳細情報

• CRID: 1390282679202902784
• NII論文ID: 130004358742
• NII論文ID: 10021127924
• NII書誌ID: AN00140335
• DOI: 10.7209/tanso.2008.166
• ISSN: 18845495
• ISSN: 03715345
• NDL書誌ID: 9550013
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9550013
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可