Original synthesis route of bulk binary superconducting graphite intercalation compounds with strontium, barium and ytterbium - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue New Journal of Chemistry Année : 2020

Original synthesis route of bulk binary superconducting graphite intercalation compounds with strontium, barium and ytterbium

Sébastien Cahen
Inass El Hajj
Lucie Speyer
Ghouti Medjahdi
Philippe Lagrange
  • Fonction : Auteur
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C. Hérold

Résumé

Thanks to its lamellar structure, graphite can host various chemical species between its interplanar spaces to form Graphite Intercalation Compounds (GIC). Intercalation of metals into graphite can lead to remarkable modifications of the physical properties of the sample with respect to pristine graphite as for instance superconductivity. In this paper, we report attempts made to intercalate strontium, baryum and ytterbium into graphite, using a recent method involving a LiCl-KCl molten salt as a reaction medium. Resulting samples are characterized regarding their structure and chemical composition. We reveal the obtaining of bulk SrC$_6$ and BaC$_6$ and a superficial intercalation of ytterbium leading to superconducting YbC$_6$ domains only, as confirmed by dc-magnetization measurements.

Domaines

Matériaux
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Dates et versions

cea-02478090 , version 1 (13-02-2020)

Identifiants

Citer

Sébastien Cahen, Inass El Hajj, Lucie Speyer, Pascal Berger, Ghouti Medjahdi, et al.. Original synthesis route of bulk binary superconducting graphite intercalation compounds with strontium, barium and ytterbium. New Journal of Chemistry, inPress, 44 (24), pp.10050-10055. ⟨10.1039/C9NJ06423K⟩. ⟨cea-02478090⟩
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