High speed coherent switching below the Stoner-Wohlfarth limit

Measurements of the switching characteristics of high coercivity magnetic tapes for field pulse widths /spl ges/0.6 ns have been reported previously. In an effort to develop a simple theoretical framework in which to develop a simple magnetization dynamics, the well established Gilbert form of the Landau-Lifshitz equation, applied to a uniaxial, single domain particle with uniform magnetization was chosen. The results which were obtained using straightforward numerical methods show that when the damping constant /spl alpha/>