Minimal field requirement in precessional magnetization switching
arXiv:cond-mat/0409671 · doi:10.1063/1.2161421
Abstract
We investigate the minimal field strength in precessional magnetization switching using the Landau-Lifshitz-Gilbert equation in under-critically damped systems. It is shown that precessional switching occurs when localized trajectories in phase space become unlocalized upon application of field pulses. By studying the evolution of the phase space, we obtain the analytical expression of the critical switching field in the limit of small damping for a magnetic object with biaxial anisotropy. We also calculate the switching times for the zero damping situation. We show that applying field along the medium axis is good for both small field and fast switching times.
6 pages, 7 figures
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Cited by in corpus (5)
- Theoretical limit of the minimal magnetization switching field and the optimal field pulse for Stoner particles
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- Ballistic (precessional) contribution to the conventional magnetic switching
- Material Parameters for Faster Ballistic Switching of an In-plane Magnetized Nanomagnet
- Reduction of energy cost of magnetization switching in a biaxial nanoparticle by use of internal dynamics