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.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - May 31 2007|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics