Quasi-ballistic magnetization switching in Co/Pt dots with perpendicular magnetization

N. Kikuchi, Y. Suyama, S. Okamoto, O. Kitakami, T. Shimatsu

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


A transverse pulse magnetic field with fast rise time generates precessional motion of magnetization due to finite torque. If the torque is sufficiently large enough magnetization may switch irreversibly via a ballistic trajectory even when energy barrier exists between two energetically stable states. We demonstrate magnetization switching in Co/Pt multilayer nanostructured dots via quasi-ballistic magnetization motion excited by a pulse field with subnanoseconds rise time. The quasi-ballistic switching has been found when the rise time of a pulse field is comparable to the half of magnetization precession period, beating the Stoner-Wohlfarth switching limit.

Original languageEnglish
Article number112409
JournalApplied Physics Letters
Issue number11
Publication statusPublished - 2014 Mar 17


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