Thickness dependencies of structural and magnetic properties of cubic and tetragonal Heusler alloy bilayer films

R. Ranjbar, K. Z. Suzuki, A. Sugihara, Y. Ando, T. Miyazaki, S. Mizukami

研究成果: Article

3 引用 (Scopus)

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The thickness dependencies of the structural and magnetic properties for bilayers of cubic Co-based Heusler alloys (CCHAs: Co2FeAl (CFA), Co2FeSi (CFS), Co2MnAl (CMA), and Co2MnSi (CMS)) and D022-MnGa were investigated. Epitaxy of the B2 structure of CCHAs on a MnGa film was achieved; the smallest thickness with the B2 structure was found for 3-nm-thick CMS and CFS. The interfacial exchange coupling (Jex) was antiferromagnetic (AFM) for all of the CCHAs/MnGa bilayers except for unannealed CFA/MnGa samples. A critical thickness (tcrit) at which perpendicular magnetization appears of approximately 4–10 nm for the CMA/MnGa and CMS/MnGa bilayers was observed, whereas this thickness was 1–3 nm for the CFA/MnGa and CFS/MnGa films. The critical thickness for different CCHAs materials is discussed in terms of saturation magnetization (Ms) and the Jex.

元の言語English
ページ(範囲)195-201
ページ数7
ジャーナルJournal of Magnetism and Magnetic Materials
433
DOI
出版物ステータスPublished - 2017 7 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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