Heavy fermion behavior in Ce(NixPd1-x)(2)Si-2

Measurements of the magnetic susceptibility chi, specific heat C, and therm oelectric power S were carried out for the solid solution Ce(NixPd1-x)(2)Si -2 (0 less than or equal to x less than or equal to 1). With increasing x, the ground state changes from an antiferromagnetic Kondo state (x < 0.2) to an intermediate valence state (x > 0.3). The heavy fermion state was found to evolve at the crossover concentration at x = 0.2, where the long-range magnetic order seems to disappear. (C) 2001 American Institute of Physics.