Stable microwave-assisted magnetization switching for nanoscale exchange-coupled composite grain

Terumitsu Tanaka, Shota Kashiwagi, Yoshitoki Furomoto, Yuto Otsuka, Kimihide Matsuyama

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

Magnetization mechanisms of nanoscale magnetic grains greatly differ from well-known magnetization mechanisms of micrometer- or millimeter-sized magnetic grains or particles. Magnetization switching mechanisms of nanoscale exchange-coupled composite (ECC) grain in a microwave field was studied using micromagnetic simulation. Magnetization switching involving a strongly damped or precessional oscillation was studied using various strengths of external direct current and microwave fields. These studies imply that the switching behavior of microwave-assisted magnetization switching of the ECC grain can be divided into two groups: stable and unstable regions, similar to the case of the Stoner-Wahlfarth grain. A significant reduction in the switching field was observed in the ECC grain when the magnetization switching involved precessional oscillations similar to the case of the Stoner-Wohlfarth grain. This switching behavior is preferred for the practical applications of microwave-assisted magnetization switching.

本文言語英語
論文番号461
ページ(範囲)1-8
ページ数8
ジャーナルNanoscale Research Letters
8
1
DOI
出版ステータス出版済み - 2013

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学

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