Abstract
The results of an investigation of the superconducting and normal state physical properties of (LaNd)Sn/sub 3/ alloys are reported. Superconducting state data are presented describing the depression of the superconducting transition temperature T/sub c/ with Nd impurity concentration, the reduction of the reduced jump in heat capacity ..delta..C/..delta..C/sub 0/ with decreasing reduced superconducting transition temperature T/sub c//T/sub c0/, and the pressure dependence of T/sub c/. Normal state data for the temperature dependences of the magnetic susceptibility and heat capacity demonstrate the importance of crystalline electric field effects in the physical behavior of (LaNd)Sn/sub 3/ alloys and indicate that Nd interimpurity magnetic interactions and possibly a small amount of Nd-Sn antisite disorder are manifested in the experimental results. Theories based on an isotropic exchange depairing model are unable to give a safisfactory account of all the experimental data, suggesting that the physical properties of (LaNd)Sn/sub 3/ alloys may be modified by processes involving the orbital exchange scattering of host conduction electrons by the Nd impurities.
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