SPECIFIC-HEAT OF HEAVY-FERMION SUPERCONDUCTOR UPD2AL3

We report experimental results of the electrical resistivity and the s pecific heat of UPd2+xAl3+y(nominal) single crystals. An anomaly in th e specific heat, which was reported previously, has disappeared in the present measurement, although there still exists an anomaly in the th ermal expansion. The temperature dependence of the specific heat is ve ry sensitive to the stoichiometry and shows either T2.5 or T3 dependen ce at lower temperatures.