ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
In molecular compounds, the magnetic properties depend on the coupling between the magnetic moments of transition metal ions, rare earth ions, and/or free radicals. This coupling is often antiferromagnetic, but can give a high spin moment in some particular cases. When organic molecules form crystals, again the coupling between molecules can be antiferromagnetic or ferromagnetic like. In a few cases the ferromagnetism, only due to nitroxide radicals, has been observed at low temperature. We present here a more general case of a manganese(II) derivative of an "imidazole substituted nitronyl nitroxide'' with complex behavior. The high temperature properties can be explained by ferrimagnetic coupling between the Mn and nitroxide spins. At low temperature a weak intermolecular coupling appears below 10 K, as well as a weak ferromagnetic component below 4.5 K. These low temperature properties might be due to the canting of antiferromagnetically coupled spins. © 1996 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.361709
