Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.342, 167-176, 2000
Rutile and layered magnets based on transition metal complexes containing dicyanamide and tricyanomethanide
The synthesis, characterization and the magnetic properties of (MX2)-X-II, Co-5(II)(OH)(8)X-2.nH(2)O, and M-2(II)(OH)(3)X.nH(2)O, where M = Cu, Ni or Co and X = N(CN)(2) or C(CN)(3), are reported. Long range ferromagnetic magnetic ordering is observed for M-II(N(CN)(2))(2), M = Ni and Co and for Ni-2(II)(OH)(3)X.nH(2)O, while Co-5(II)(OH)(8)X-2.nH(2)O exhibits ferrimagnetism. Short range ferromagnetic interaction is observed for Co-II(C(CN)(3))(2) and antiferromagnetic for Ni-II(C(CN)(3))(2). The copper compounds behave as paramagnets with small antiferromagnetic exchange interaction. The magnetic hardness spans the range of coercive fields from 400 to 12000 Oe at 2 K.