Abstract
Frozen solutions of the single molecule magnet ( or trimethylacetate) are studied by magnetization and magnetic resonance investigations. ac magnetic susceptibility measurements show that the system is stable in solution. Interestingly, the barrier and prefactor for the thermally activated magnetization relaxation are the same as in the solid state. This means that this system is not influenced by its surroundings, in contrast to other derivatives. The zero-field-splitting spin Hamiltonian parameters of in solution are determined by magnetic resonance spectroscopy methods to be very similar to those in the solid state. By these methods, it is also possible to distinguish between truly dissolved and precipitated species, which is not possible by magnetization measurements.
- Received 7 December 2006
DOI:https://doi.org/10.1103/PhysRevB.75.104403
©2007 American Physical Society