Superconducting properties of filled skutterudite La0.8 Rh4 P12

M. Imai, M. Akaishi, E. H. Sadki, T. Aoyagi, T. Kimura, I. Shirotani

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15 Citations (Scopus)


The superconducting properties of filled skutterudite La0.8 Rh4 P12 synthesized at 9.4 GPa and 1473 K using a belt-type apparatus were investigated by measuring the magnetization, electrical resistivity, and specific heat. Filled skutterudite La0.8 Rh4 P12 is a type-II superconducting material with a critical temperature for the superconducting transition, TC, of 14.9 K. The upper critical field HC2 (0) and Ginzburg-Landau coherent length ξ (0) were determined to be 167 (1) kOe and 4.41 (1) nm, respectively. The electronic heat-capacity coefficient γn and the Debye temperature ΘD were 25.1 (8) mJ mol K2 and 459 (12) K, respectively. Using TC and ΘD, the electron-phonon coupling constant λ was estimated to be approximately 0.7, suggesting that La0.8 Rh4 P12 is an intermediately coupled superconducting material.

Original languageEnglish
Article number184535
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number18
Publication statusPublished - May 31 2007
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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