Preparation and properties of ferromagnetic FePt dispersion

K. Sato, B. Jeyadevan, Kazuyuki Tohji

研究成果: Article査読

22 被引用数 (Scopus)

抄録

FePt nanoparticles were prepared via the coreduction of platinum and iron acetyl acetonate precursors in tetraethylene glycol at various temperatures. The X-ray diffractogram of the as-synthesized FePt nanoparticles at temperatures above 573 K exhibited (0 0 1) and (1 1 0) superlattice reflections. TEM-EDX studies revealed that the average particle diameter was 5 nm with nearly equiatomic composition. The saturation magnetization and coercivity at room temperature (RT) were found to be 50 emu/g and 2.1 kOe, respectively. The high anisotropy field of about 32 kOe and magnetic ordering at RT revealed the presence of the highly anisotropic L10 phase. These particles were partially dispersed in an organic solvent using oleyl amine as surfactant. The dispersed FePt nanoparticles will be useful in future technological applications.

本文言語English
ページ(範囲)1-4
ページ数4
ジャーナルJournal of Magnetism and Magnetic Materials
289
DOI
出版ステータスPublished - 2005 3月
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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