We report results of extensive magnetic studies of three triangular quantum Heisenberg antiferromagnets (TQHAFs) with weak additional Dzyaloshinskii-Moriya interaction, Cu2(OH)3(CmH{2m+1}COO), m=7,9, and 11. Fits of the dc susceptibility data to high temperature series expansions are consistent with high temperature TQHAF behavior. At low temperatures the deviations from the TQHAF predictions suggest a canted antiferromagnetic type of ordering, consistent

We report magnetic studies of Fe(TCNE)2x(CH2Cl2), a member of the family of high Tc molecule-based magnets, M(TCNE)2 y(solvent) (M = V, Mn, TCNE = tetracyanoethelyne). Based on extensive static and dynamic magnetic measurements we show that this system has a complex magnetic behavior, with a mixture of ferrimagnetic and random anisotropy characteristics. The constricted hysteresis curve with a spin-flop shape, the ac susceptibility in the presence