Stoner-wohlfarth like magnetization switching in very small Co/Pt nanodots under the assistance of radio frequency magnetic field

Masaki Furuta, Satoshi Okamoto, Nobuaki Kikuchi, Osamu Kitakami, Takehito Shimatsu

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

So far, microwave assistance effects have been investigated for several perpendicular magnetic anisotropy materials with the sample dimension of at least above submicron. In this work, we study the microwave assisted magnetization switching in nanostructured Co/Pt dots as small as 50nm in diameter. Significant reduction of the switching field and the increase of the critical frequency for the microwave assistance effect are clearly observed with the enhancement of the radio frequency magnetic field. This switching behavior is similar to that predicted by the single macrospin calculation and is well explained using the Stoner-Wohlfarth model in the rotating frame.

Original languageEnglish
Article number053006
JournalApplied Physics Express
Volume6
Issue number5
DOIs
Publication statusPublished - 2013 May 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Stoner-wohlfarth like magnetization switching in very small Co/Pt nanodots under the assistance of radio frequency magnetic field'. Together they form a unique fingerprint.

Cite this