Abstract
Temperature dependence of magnetic susceptibility and electrical resistivity of (Ce1-xLax)Pb2 compounds have been investigated in order to study the effect of substituting La for Ce in a heavy fermion system. The effective magnetic moment estimated from the Curie-Weiss law agrees with that of the theoretical trivalent Ce-ion and independent of the La concentration in high temperatures. The temperature dependence of the magnetic contribution to the electrical resistivity continuously changes from a dense to dilute Kondo regime with increasing La concentration. This behavior would be correlated to a reduction of the Kondo temperature by the substitution of La for Ce.
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