Bistability condition of circular nanomagnet

Osamu Kitakami, Satoshi Okamoto, Nobuaki Kikuchi, Takehito Shimatsu, Kaname Mitsuzuka, Hajime Aoi

研究成果: Article査読

4 被引用数 (Scopus)

抄録

We have examined the bistability condition of a circular magnetic dot by extending Thiele's bubble domain theory for an infinite continuous film to a finite one, and have found that the dot is always bistable at least when its diameter is D ≤ 4 /, where / is the characteristic length given by / = σw/4πMa2w: wall energy per unit area, Ma: saturation magnetization). This domain theory naturally explains the dot size dependence of the nucleation field without any assumptions.

本文言語English
論文番号123002
ジャーナルApplied Physics Express
2
12
DOI
出版ステータスPublished - 2009 12月 1

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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