Mechanism of higher order contributions in interface anisotropy of thin films: FeCo/MgO case

J. Barker, A. Kalitsov, A. Singh, O. N. Mryasov, S. Okatov

研究成果: Conference contribution

抄録

Current state of the art perpendicular magnetic tunnel junctions (pMTJs) rely upon a large uniaxial interface anisotropy to overcome the demagnetizing field [1-3]. Experimental measurements have found that as well as the expected K1sin2(θ) anisotropy energy, a higher order K2sin4(θ) contribution is present [2,3]. In thin films with bulk anisotropies K2 can arise from a distribution of the anisotropy axes. In the course of constructing a model of FeCo/MgO we unexpectedly found a K2 sin4(θ) dependence in the free energy, even without any disorder in the anisotropy axes or higher order magneto-crystalline anisotropy.

本文言語English
ホスト出版物のタイトル2015 IEEE International Magnetics Conference, INTERMAG 2015
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781479973224
DOI
出版ステータスPublished - 2015 7月 14
イベント2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China
継続期間: 2015 5月 112015 5月 15

出版物シリーズ

名前2015 IEEE International Magnetics Conference, INTERMAG 2015

Other

Other2015 IEEE International Magnetics Conference, INTERMAG 2015
国/地域China
CityBeijing
Period15/5/1115/5/15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学
  • 表面、皮膜および薄膜

フィンガープリント

「Mechanism of higher order contributions in interface anisotropy of thin films: FeCo/MgO case」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル