Pulse rise time dependence of switching field of Co/Pt multilayer dot

Nobuaki Kikuchi, Yoshihiro Suyama, Satoshi Okamoto, Osamu Kitakami

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A voltage pulse generator for magnetic field application was built using a coaxial cable as a capacitor. The pulse duration was fixed to 10 ns and the pulse field rise time was controlled from 70 ps to 4 ns using a low pass filters. Magnetization switching experiments have been carried out on a Co/Pt multilayer dot with diameter of 300 nm using perpendicular pulse fields. The required pulse field amplitude for magnetization switching is independent of the pulse rise time suggesting the thermally activated process is dominant in the perpendicular field geometry.

Original languageEnglish
Pages (from-to)838-843
Number of pages6
JournalIEEJ Transactions on Fundamentals and Materials
Issue number10
Publication statusPublished - 2012


  • Magnetization dynamics
  • Pulse field


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