SUSCEPTIBILITY AND SPECIFIC-HEAT OF CERU2SI2 DOPED WITH U

The susceptibility, chi, and the specific-heat, C(p), have been measur ed on the pseudo-ternary compounds Ce1-xUxRu2Si2 (0 less-than-or-equal -to x less-than-or-equal-to 0.1). The measurements were taken on singl e crystals. We have found an increase of antiferromagnetic correlation s, as it is evident from susceptibility measurements, and a decrease o f the electronic specific-heat coefficient gamma(T-->0) with the U all oying of CeRu2Si2. We did not find any evidence of a long-range magnet ic ordering. The estimated changes of susceptibility and heat-capacity were discussed in the frame of volume changes due to the alloying of CeRu2Si2.