Dependence of magnetic anisotropy in Co 20Fe 60B 20 free layers on capping layers in MgO-based magnetic tunnel junctions with in-plane easy axis

Hiroyuki Yamamoto, Jun Hayakawa, Katsuya Miura, Kenchi Ito, Hideyuki Matsuoka, Shoji Ikeda, Hideo Ohno

研究成果: Article査読

28 被引用数 (Scopus)

抄録

Perpendicular magnetic anisotropy (PMA) in Co 20Fe 60B 20 films depending on the adjacent layers of Ta, Ru, and MgO was studied for reduction of switching current density J c0 in in-plane magnetic tunnel junctions (MTJs). A MgO layer reduces the out-of-plane saturation field (H s) of in-plane easy axis Co 20Fe 60B 20 films by inducing a strong PMA at the Co 20Fe 60B 20/MgO interface. The PMA is not affected much by the crystallinity in Co 20Fe 60B 20 films with different capping layers. MTJ with a MgO capping layer shows a lower J c0 than that with a Ru capping layer, in accordance with the reduction of H s.

本文言語English
論文番号053002
ジャーナルApplied Physics Express
5
5
DOI
出版ステータスPublished - 2012 5

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

フィンガープリント

「Dependence of magnetic anisotropy in Co <sub>20</sub>Fe <sub>60</sub>B <sub>20</sub> free layers on capping layers in MgO-based magnetic tunnel junctions with in-plane easy axis」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。

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