F. Bartolome et al., 3D ORDERING OF THE RARE EARTH-MOLECULAR BASED MAGNETS RE(2)(OX)[CU(PBA)](3)[CU(H2O)(5)]CENTER-DOT-20H2O (RE=GD, LA), Journal of magnetism and magnetic materials, 140, 1995, pp. 1711-1712
RE(2)(ox>[Cu(pba)](3)[Cu(H2O)(5)] . 20H(2)O, RE = Gd, La, are molecula
r materials with layered crystal structures. Low-temperature specific
heat measurements show magnetic ordering on both systems. Two-dimensio
nal behaviour is observed in the Gd compound, but the supression of th
e Cu-RE-Cu interactions for RE = La avoids this effect.