Perpendicular magnetic anisotropy at lattice-matched Co2FeAl/MgAl2O4(001) epitaxial interfaces

Hiroaki Sukegawa, Jason Paul Hadorn, Zhenchao Wen, Tadakatsu Ohkubo, Seiji Mitani, Kazuhiro Hono

研究成果: Article査読

18 被引用数 (Scopus)

抄録

We report perpendicular magnetic anisotropy (PMA) induced at Co2FeAl/MgAl2O4(001) epitaxial interfaces prepared by magnetron sputtering and post-oxidation of MgAl layers. A PMA energy density of more than 4 Merg/cm3 for 1-nm-thick Co2FeAl layers and an effective interface PMA energy density of 1.6 erg/cm2 were achieved by controlling the interfacial oxidation states through fine-tuning of oxidation processes and annealing temperature. Cross-sectional scanning transmission electron microscopy imaging revealed a lattice-matched Co2FeAl/MgAl2O4 interface, which may be responsible for the large PMA energy due to a reduction of the bulk anisotropy contribution.

本文言語English
論文番号112403
ジャーナルApplied Physics Letters
110
11
DOI
出版ステータスPublished - 2017 3 13

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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「Perpendicular magnetic anisotropy at lattice-matched Co<sub>2</sub>FeAl/MgAl<sub>2</sub>O<sub>4</sub>(001) epitaxial interfaces」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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