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

研究成果: Article査読

15 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号053006
ジャーナルApplied Physics Express
6
5
DOI
出版ステータスPublished - 2013 5

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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