INOR 733 |
| Polyoxovanadates are known to exhibit numerous interesting chemical and magnetic properties. One interesting aspect of metal centers with oxo-bridging is that this facilitates spin-spin coupling, which gives rise to isolated clusters of magnetic ions, commonly known as molecular magnets. By treating isolated magnetic clusters as interacting quantum spin systems with an assumed Hamiltonian, one may predict the magnetic properties of these materials. The simplest of these molecular magnets are trimers of S = ½ ions; examples identified in nature include several organic vanadium phosphates. In this contribution, the magnetic properties (the magnetic susceptibility) of one such material, (CN3H4)4Na2[H4VIV6P4O30{(CH2)3CCH2OH}2]•14H2O, is measured and compared with the theoretical predictions assuming that it is a spin trimer molecular magnet. Inelastic neutron scattering provides an experimental technique that directly probes the assumed magnetic interactions within these magnetic materials. Predictions of the neutron scattering structure, required for planed INS experiments on this material, are also discussed. |
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Materials: Applications
7:00 PM-10:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster
Division of Inorganic Chemistry |