2005/09/11 by Wolfgang Wernsdorfer, W. Wernsdorfer, M. Murugesu +5
Chemistry · Materials Science · Physics and Astronomy · #Advanced NMR Techniques and Applications #Magnetic properties of thin films #Magnetism in coordination complexes #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.72.212406
6 pages, 6 figures
arxiv created 2005/09/11 · openalex publication_date 2005/12/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
A method, based on the N'eel-Brown model of thermally activated magnetization reversal of a magnetic single-domain particle, is proposed to study the field-sweep-rate dependence of the coercive field of single-molecule magnets (SMMs). The application to Mn12 and Mn84 SMMs allows the determination of the important parameters that characterize the magnetic properties: the energy barrier, the magnetic anisotropy constant, the spin, \ensuremathτ0, and the crossover temperature from the classical to the quantum regime. The method may be particularly valuable for large SMMs that do not show quantum tunneling steps in the hysteresis loops.