The magnetic moment and the specific heat of a single crystal and polycryst
alline samples of Bi2CuO4 have been measured at the temperatures 2-300 K an
d magnetic fields 0.1-5 T with the help of a SQUID magnetometer and the cal
orimetric relaxation technique. The possible origins of unusual increasing
of the DC magnetic susceptibility below 15-20 K are discussed. We also comp
ared our results on single crystals and polycrystalline samples. (C) 1999 P
ublished by Elsevier Science B.V. All rights reserved.