MAGNETIC-FIELD DEPENDENCE OF THE SPECIFIC-HEAT OF UPD2GA3

We have measured the specific heat in magnetic fields up to 6T of the heavy-fermion compound UPd2Ga3 at temperatures below 20 K. From our da ta we obtain the field dependence of the antiferromagnetic transition thereby proving that the magnetic phase diagram of UPd2Ga3 is similar to that of the heavy-fermion superconductor UPd2Al3. Further, we deriv e the electronic contribution to the specific heat gamma as a function of field. As expected for conventional dense Kondo systems gamma is l owered in magnetic fields. We analyse our specific heat results in ter ms of the contributions from heavy electrons, crystalline electric fie lds and the lattice, and compare the behaviour with UPd2Al3.