Abstract
Superconductivity has been recently found in two Li containing compounds, Li2Pd3B and Li2Pt3B. They show superconducting transition at the temperatures, 7.5 K and 2.17 K respectively. The structure analysis has been reported by Eibenstein et. al. in 1997 and they take the same cubic structure with the symmetry of P4332. Heat capacity of these compounds was measured for confirming their bulk superconductivity and investigating superconducting properties. □C/Tc are evaluated to be around 18 mJ/mol K2 for Li2Pd3B and 9.7 mJ/mol K2 for Li2Pt3B. Electronic heat capacity (γ) and Debye temperature (θD) are derived from the normal state data and lead to 9.0 mJ/mol K2 and 221 K for Li2Pd3B, 7.0 mJ/mol K2 and 228 K for Li2Pt3B. Those physical parameters of the two compounds are discussed.
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