Thermal and magnetic study of mixed-metal oxalate-bridged 2D magnets

Abstract

The mixed-metal compounds [P(Ph) 4][M IICr(C 2O 4) 3] (Ph = Phenyl; M = Mn, Fe) have been studied by calorimetric and magnetic AC and DC techniques. The Mn-derivative presents low dimensional magnetic character and shows evidence of the onset of a 3D-magnetic ordering. However, experimental results in the Fe-derivative point to a spin-glass-like behavior. The differences observed in the magnetic behavior of both compounds are assigned to the effect of random anisotropy due to the presence of structural disorder.