Controlled crystallization of Mn-12 single-molecule magnets by compressed CO2 and its influence on the magnetization relaxation.

Controlled crystallization of Mn-12 single-molecule magnets by compressed CO2 and its influence on the magnetization relaxation.

Micro- and sub-micro particles of complex [Mn12O12(O2CC6H5)(16)(H2O)(4)] ( 1) with controlled size and polymorphism have been prepared by dense-gas crystallization techniques, showing a remarkable particle size influence on the magnetization relaxation rates.