Superconducting property of single crystalline UPd2Al3 has been studie
d by static magnetization, AC susceptibility and flux flow resistivity
measurements. A pronounced peak structure is observed just below the
superconducting upper critical field H-c2. The peak consists of two st
ructures at low temperatures, becomes one above 0.6 K and continues up
to a low field of 0.1 T. These results are compared to those based on
the FFLO model.