Oliver Waldmann, Graham Carver, Chris Dobe, Andreas Sieber, Hans U. Güdel and Hannu Mutka
Direct Identification of the Minority and Majority Species in the Single-Molecule Magnet Mn₁₂-Acetate by Inelastic Neutron Scattering
J. Am. Chem. Soc. 129, 1526-1527 (2007)                 

Abstract: A field-dependent inelastic neutron scattering (INS) experiment on an array of oriented single crystals of Mn₁₂-acetate is reported. The experimental results provide clear evidence that the minority species observed in the INS spectra is the fast-relaxing species observed in, for instance, AC-susceptibility measurements.