De Haas–van Alphen Effect in UPd3

We have performed the de Haas–van Alphen (dHvA) experiment to elucidate the Fermi surface (FS) property of the typical localized 5 f -electron system of UPd 3 using a high-quality sample (RRR = 100). Many dHvA branches are newly observed. The FS topology is discussed comparing the angular dependence of the dHvA frequency and the two different band models. An anomaly due to the quadrupolar or magnetic interaction can not be found in the observed dHvA signal as well as the ac susceptibility up to 17.5 T.