Fabrication of oriented L10-FeCuPd and composite bcc-FeL1 0-FeCuPd nanoparticles: Alloy composition dependence of magnetic properties

Hiroshi Naganuma, Kazuhisa Sato, Yoshihiko Hirotsu

研究成果: ジャーナルへの寄稿学術論文査読

14 被引用数 (Scopus)

抄録

Oriented and well-isolated L 10 -FeCuPd ternary alloy nanoparticles have been fabricated by electron-beam evaporation followed by postdeposition annealing. A single L 10 phase was formed in the FeCuPd nanoparticles with (Fe+Cu) content lower than 48 at. %. A strong preferential c -axis orientation along the film normal direction was achieved by Cu addition, which leads to a strong perpendicular magnetic anisotropy. Also, a lowering of the ordering temperature by 50 K compared to the binary L 10 -FePd nanoparticles was achieved by Cu addition. By contrast, composite particles composed of the bcc Fe and the L 10 -FeCuPd were formed when the (Fe+Cu) content was higher than 52 at. %. Coexistence of the bcc Fe and the L 10 -FeCuPd was confirmed by high-resolution transmission electron microscopy and nanobeam electron diffraction. It was found that perpendicular magnetic anisotropy of the L 10 -FeCuPd nanoparticles on the NaCl substrate is sensitive to the alloy composition.

本文言語英語
論文番号08N706
ジャーナルJournal of Applied Physics
99
8
DOI
出版ステータス出版済み - 2006

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